Kirchhoff’s Law Question & AnswersOctober 11, 2021 By Wat Electrical Leave a Comment This article lists 100 Kirchhoff's Law MCQs for engineering students. All the Kirchhoff's Law Questions & Answers given below includes solution and link wherever possible to the relevant topic.Gustav Kirchhoff scientist in the year 1845 introduced 2 circuit laws called Kirchhoff 1 st law and 2 nd law. The main reason behind the implementation of this law was the complexities developed while measuring certain voltage and current values in a complex type electrical circuit. In other words, one can easily calculate various electrical parameters according to the specific electrical components present in the circuit, but in a situation of lumped and complicated based electrical circuits, it would be very difficult to calculate voltage and current values. Hence for this purpose Kirchhoff 1 st law current law (KCL) and Kirchhoff 2 nd law voltage law (KVL) was put forward. KCL law defines that the sum of incoming and outgoing current towards and away from a node in a circuit is equal. Whereas KVL defines the total circuit voltage as equal to the addition of drop voltage of that circuit. KVL and KCL laws are mathematically represented and solved using the matrix to obtain unknown current and voltage parameters.The advantage of using this law is it simplifies the procedure to calculate the unknown values of current and voltage of a complex circuit. But they limit in terms of assuming the absence of fluctuating magnetic fields within the loop.1). Who introduced currents law? Gustav Kirchhoff Henry Charles Danial Both b and c HintGustav Kirchhoff scientist in 1845 introduced 2 laws namely Kirchhoff 1 st law and 2 nd law.2). Which of the following is a Kirchhoff’s first law? KCL KVL Current law Both a and c HintKCL also called current law is Kirchhoff’s first law.3). Which of the following is Kirchhoff’s second law? KCL KVL Current law Both a and c HintKirchhoff’s second law is a KVL also called voltage law.4). Which of the following Kirchhoff’s law defines addition of multiple voltages in a loop is 0? KCL KVL Voltage law Both b and c HintKVL or voltage law of Kirchhoff’s law defines the addition of multiple voltages in a loop is 0.5). Which of the following Kirchhoff’s law defines incoming and outgoing sum of currents towards node are equal? KCL KVL Voltage law Both b and c HintKCL Kirchhoff’s law defines the incoming and outgoing sum of currents towards node are equal.6). Which of the formula defines KCL where i1, i2 are incoming currents and i3,i4 are outgoing currents from a node in a circuit? i1+i2=i3+i4 i1+i3=i2+i4 i1-i2=i3-i4 i4-i1=i2+i3 HintThe KCL where i1, i2 is incoming currents and i3,i4 are outgoing currents from a node in a circuit then the formula is i1+i2=i3+i4.7). Which of the following electric parameters do Kirchhoff law calculate? Voltage Resistance Current Both a and c HintBoth the current and voltage of an electric circuit is calculated with Kirchhoff laws. Read more about circuits.8). Which of the following law calculates resistance of electric circuit? Ohms law KCL KVL Both b and c HintOhms law calculates the resistance of the electric circuit using v=ir.9). A circuit is a ____ loop? Short circuited Closed Opened Both a and b HintA circuit is a short circuited or closed loop.10). Which of the following term in DC circuit theory connects elements? Path Node Branch Loop HintPath in DC circuit theory connects elements and sources.11). Which of the following term in DC circuit theory connects number of electrical elements? Path mesh Branch Loop HintA node term in DC circuit theory connects the number of electrical elements.12). Which of the following term in DC circuit theory connects between nodes? Path Mesh Branch Loop HintA branch term in DC circuit theory connects between nodes.13). Which of the following term in DC circuit theory is a closed type path? Path Mesh Branch Loop HintA loop term in DC circuit theory is a closed type path.14). Which of the following term in DC circuit theory does not have closed type path? Path Mesh Branch Loop HintA mesh term in DC circuit theory in DC circuit theory does not have closed type path.15). Which of the following is the application of Kirchhoff’s law? Determine current in circuit Determine potential drop Determine current direction All the above HintKirchhoff’s law is used for determining current in the circuit, potential drop, current direction, and energy. Read more about energy.16). What is the value voltage across resistor r1, when r1, r2, r3 resistors of 5ohms, 10ohms and 15ohms are connected in series with 12V of voltage source? 12V 21V 10V 2V 17). Which of the following law is used for analyzing a circuit? Kirchhoff’s law Newtons law Faradays law Ohms law HintKirchhoff law is used for analyzing a circuit.18). The value of current in a parallel configured circuit is _______? High Low Zero Infinity HintThe value of current in a parallel configured circuit is high.19). Which of the following satisfies KCL? Zero charge accumulation at node Possibility of charge accumulation at node A node may store energy None of the above HintKCL has zero charge accumulation at a node, as a node is a point that allows current to in and out flow.20). KVL principle converts ___ parameter? Energy Mass Charge Momentum HintKVL principle converts energy parameter.21). KVL is performed using___? Nodal analysis Mesh analysis Both a and b Voltage analysis HintKVL is performed using mesh analysis.22). KCL is applied to ____? Non planar networks Planar networks Both a and b Node networks HintKCL is applied to both planar and non planar networks.23). Which of the following are the disadvantages experienced by Kirchhoff’s law? Incorrect high frequency value of AC is obtained Neglects other components electric field Ignores current flow through capacitors All the above 24). Which of the following are the components of KVL or KCL circuits? VI sources Resistors Wires All the above HintThe components of KVL or KCL circuits are VI sources, resistors, wires, capacitors, inductors and more. Read more about capacitors.25). Which of the following are the components of a resistive type circuit? Resistors Ideal voltage source Ideal current source All the above HintThe components of a resistive type circuit include resistors, ideal voltage source, and ideal current source.Kirchhoff Law Important MCQs26). An ideal current source provides ____ value of current? Minimum Maximum Zero Infinity HintAn ideal current source provides the infinity value of current.27). An ideal voltage source provides ___ value of voltage? Minimum Maximum Zero Infinity HintAn ideal voltage source provides the infinite value of voltage.28). An ideal resistor has ___ value of resistance? Minimum Maximum Zero Infinity HintAn ideal resistor has an infinite value of resistance.29). Which of the following is used for representing Kirchhoff’s equations? Integration Differentiation Matrix Both a and b HintMatrix is used for representing Kirchhoff’s equations.30). Mesh analysis has ___ steps? 2 3 5 6 HintMesh analysis has 3 steps.31). Identify the first step of mesh analysis? Every loop is assigned with loop based current value Kirchhoff’s KVL is implemented for every loop Perform mathematical solvation to obtain loops currents value Assign each node with a resistance value HintThe first step of mesh analysis is every loop is assigned with loop based current value.32). Identify the second step of mesh analysis? Every loop is assigned with loop based current value Kirchhoff’s KVL is implemented for every loop Perform mathematical solvation to obtain loops currents value Assign each node with a resistance value HintThe second step of mesh analysis is Kirchhoff’s KVL is implemented for every loop.33). Identify the third step of mesh analysis? Every loop is assigned with loop based current value Kirchhoff’s KVL is implemented for every loop Perform mathematical solvation to obtain loops currents value Assign each node with a resistance value HintThe third step of mesh analysis is performs mathematical solvation to obtain loops currents value.34). A nodal analysis can be performed in ___ steps? 2 3 4 5 HintA nodal analysis can be performed in 4 steps.35). Which of the following is the first step of nodal analysis? Assign an arbitrary value of voltage at each node in circuit Calculate branch currents Apply KCL to each node Assign x value to a node HintThe first step of nodal analysis is to assign an arbitrary value of the voltage at each node in the circuit.36). Which of the following is the second step of nodal analysis? Assign an arbitrary value of voltage at each node in circuit Calculate branch currents Apply KCL to each node Assign x value to a node HintThe second step of nodal analysis is to calculate branch currents.37). Which of the following is the third step of nodal analysis? Assign an arbitrary value of voltage at each node in circuit Calculate branch currents Apply KCL to each node Assign x value to a node HintThe third step of nodal analysis apply KCL to each node.38). Which of the following is the fourth step of nodal analysis? Assign an arbitrary value of voltage at each node in circuit Calculate branch currents Apply KCL to each node Perform mathematical calculation and obtain voltage at node HintThe fourth step of nodal analysis is to perform mathematical calculation and obtain voltage at node.39). If constant value of voltage or current is sent to circuit then the circuit is said to be called___ DC circuit AC circuit ADC circuit DAC circuit HintIf a constant value of voltage or current is sent to the circuit then the circuit is said to be called a DC circuit.40). If variable value of voltage or current is sent to circuit then the circuit is said to be called___ DC circuit AC circuit ADC circuit DAC circuit HintA variable value of voltage or current is sent to the circuit then the circuit is said to be called an AC circuit.41). Which of the following parameter is used for performing analysis process? Current Voltage Resistance Both a and b HintCurrent and voltage parameter is used for performing analysis process.42). A star type configuration of electrical circuit has ___ ports? 1 2 3 4 HintA star type configuration of the electrical circuit has 3 ports.43). A delta type configuration of electrical circuit has ___ ports? 1 2 3 4 HintA delta type configuration of the electrical circuit has 3 ports.44). How many nodes do star network have? 2 3 4 5 HintA star network has 4 nodes.45). How many nodes do a delta network have? 1 2 3 4 HintA delta network have 4 nodes.46). Choose the advantages provided by Kirchhoff’s law? Unknown value of voltages is calculated Unknown value of current is calculated Solves complex circuits quickly All the above HintThe advantages provided by Kirchhoff’s law include the unknown value of current and voltages is calculated, and solves complex circuits quickly.47). Which of the following field derives Kirchhoff’s loop law? Electrical Magnetic Electrostatic Electro magnetic HintAn electrostatic field derives Kirchhoff’s loop law.48). Which of the following law is used with KCL? Ohms law Faraday law Coulomb’s law Both b and c HintOhms law is used with KCL.49). Who introduced ohms law? George ohms Kirchhoff’s Fredrick Charles HintGeorge ohms introduced ohms law.50). In which year ohms law was introduced? 1781 1788 1789 1777 HintIn 1781 ohms law was introduced.Kirchhoff Law MCQs for Quiz51). Ohms law defines relation of ____ parameters of electrical circuit? Current Voltage Resistance All the above HintOhms law defines the relation of resistance, voltage, and current parameters of an electrical circuit. Read more about ohms law.52). Which of the following is units of resistor? Ohms Volts Amperes Watts HintThe units of resistor is ohms.53). Which of the following is units of current? Ohms Volts Amperes Watts HintThe units of current is Amperes.54). Which of the following is units of power? Ohms Volts Amperes Watts HintThe units of power is Watts.55). Potential difference in a circuit is also called as____? Voltage difference Electric pressure Electric tension All the above HintThe potential difference of a circuit is also called a voltage difference, electric pressure or electric tension.56). The value of 1 volt is _____? 1joule 1joule/1coulomb 1colomb All the above Hint1 volt is 1joule/1coulomb.57). What is the SI unit of potential difference? Volt Amperes Volts per meter Ampere per meter square HintThe SI unit of potential difference is volts.58). Which of the following is the equation of Kirchhoff’s voltage law? Del X E = -dB/dt = 0 Del X B = -dB/dt = 0 Del X H = -dB/dt = 0 Del X E = -dB/dt = 1 HintThe equation of Kirchhoff’s voltage law Del X E = -dB/dt = 0.59). Nodal analysis of an electric circuit is also called______? Node voltage analysis Branch current method Nodal analysis All the above HintNodal analysis of an electric circuit is also called node voltage analysis, nodal analysis or a node voltage analysis.60). Kirchhoff’s law can also be represented using______? Maxwell equation Quantum equations Hall effect All the above HintKirchhoff’s law can also be represented using Maxwell’s equation.61). Faradays law is based on ___ principle? Electromagnetism Electro mechanical Mechanical Both a and b HintFaradays law is based on the electromagnetism principle.62). Which of the following is the application of electromagnetic induction? Inductors Transformers All the above HintThe application of electromagnetic induction is inductors, transformers and inductors.63). Who implemented electromagnetic induction? Michael Faraday Harry Faraday Charles Farads All the above HintMichael Faraday implemented electromagnetic induction.64). What is value of current if charge of 20 coulomb is sent through a point of 0.25seconds? 20A 80A 2A 10A HintThe value of current if the charge of 20 coulombs is sent through a point of 0.25seconds is 80A.65). Which of the following is the condition for equivalent circuit? Contains multiple passive elements Connects components in series or parallel Replacing multiple components in to single equivalent circuit All the above HintThe condition for the equivalent circuit contains multiple passive elements, connects components in series or parallel, and replaces multiple components into the single equivalent circuit.66). In how many types can a equivalent circuit be constructed? 2 3 4 1 HintAn equivalent circuit can be constructed in 2 types namely parallel and serial.67). Electrical representation of network graph is represented using______ types? 2 1 3 4 HintElectrical representation of network graph is represented using 3 types namely, incident matrix, fundamental loop matrix and fundamental cut set matrix.68). A matrix that represents an electrical circuit is called____? Incident matrix Fundamental cut set matrix Fundamental loop matrix Both b and c HintA matrix that represents an electrical circuit is called an incident matrix.69). An incident matrix is also called as _____? Node incidence matrix Node to branch incidence matrix Node to node matrix Both a and b HintAn incident matrix is also called a node incident matrix or a node to branch incidence matrix.70). How many values do an incident matrix represents currents status in circuit? 2 3 1 4 HintAn incident matrix represents currents status in circuit in 3 ways such as “+1,-1 and 0”.71). Which of the following represent that current leaving the node in an electric circuit of an incident matrix? +1 -1 0 Both a and b Hint+“1” represents that current going towards the node in an electric circuit of an incident matrix.72). Which of the following represent that current going towards the node in an electric circuit of an incident matrix? +1 -1 0 Both a and b Hint“+1” represent that current going towards the node in an electric circuit of an incident matrix.73). Which of the following represent that current is either entering or leaving the node in an electric circuit of an incident matrix? +1 -1 0 Both a and b Hint“0” represent that current is either entering or leaving the node in an electric circuit of an incident matrix.74). How steps are required to calculate an incident matrix? 2 1 3 4 Hint2 steps are required to calculate an incident matrix.75). Which of the following is the first step of incidence matrix of directed graph? Choose a node Assign values to element Check for direction Repeat the previous steps HintThe first step of incidence matrix of directed graph is choose a node.Kirchhoff Law MCQs for Exams76). Which of the following is the second step of incidence matrix of directed graph? Choose a node Assign values to element and check for direction Repeat the previous steps All the above HintThe second step of the incidence matrix of the directed graph is to assign values to elements and check for direction.77). KVL law of idea is also called as _____? Conservation of energy Consumption of energy Divergence of power None of the above HintKVL law of idea is also called as conservation of energy.78). An electronic circuit consist of ___ types of components? 2 3 4 5 HintAn electronic circuit consist of 2 types of components active and passive.79). Which of the following component depends on external source to operate in an electric circuit? Active Passive Independent All the above HintA passive component in an electrical circuit depends on an external source to operate. Read more about active and passive components.80). Which of the following component generates power and supplies to its dependent component to operate in an electric circuit? Active Passive Dependent All the above HintAn active components generates power and supplies to its dependent component to operate in an electric circuit.81). Which of the following are the examples of passive components? Capacitors Resistors Coils All the above HintCoils, resistors and capacitors are few of the examples of passive components.82). Which of the following are the examples of active components? Voltage source Current source Op-amps All the above HintThe examples of active components include voltage source, current source and op-amps.83). How many types of voltage source are preset in an electrical circuit? 1 2 3 4 Hint2 types of voltage sources are present in an electrical circuit namely AC and DC voltage type sources.84). A voltage source supplying circuit with constant input voltage is called ___? AC source DC source Constant source Both b and c HintA voltage source supplying a circuit with constant input voltage is called a DC or a constant voltage type source.85). A voltage source supplying circuit with varying input voltage is called ___? AC source DC source Constant source Both b and c HintA voltage source supplying circuit with varying input voltage is called a AC voltage type source.86). A current source in an electrical circuit are of ____ types? 2 3 1 4 HintA current source in an electrical circuit is of 2 types AC and DC current source.87). A current source supplying circuit with varying input current is called ___? AC source DC source Constant source Both b and c HintA current source supplying circuit with varying input current is called AC source.88). A current source supplying circuit with constant input current is called ___? AC source DC source Constant source Both b and c HintA current source supplying circuit with constant input current is called DC source.89). An electrical component that blocks the flow of current is called______? Capacitor Resistor Inductor Transistor HintAn electrical component that blocks the flow of current is called a resistor. Read more about resistors.90). An electrical component that stores charge in circuit is called______? Capacitor Resistor Inductor Transistor HintAn electrical component that stores charge in a circuit is called a capacitor.91). An electrical component that prevents abrupt changes in circuit is called______ Capacitor Resistor Inductor Transistor HintAn electrical component that prevents abrupt changes in the circuit is called an inductor.92). A resistor is classified into ___ types? 2 3 4 5 HintA resistor is classified into 2 types namely variable and constant.93). Which of the following are the examples of resistors? Thermistors Varistor Diodes All the above HintThe examples of resistors includes thermistors, varistors and diodes.94). A varistors are classified into ___ types? 2 3 4 5 HintA varistors are classified into 3 types namely silicon carbide disc, zinc oxide, and silicon carbide type varistor. Read more about varistor.95). Which of the following is the application of capacitor? Batteries Microphones Inventors All the above HintA few of the examples of capacitor includes microphones, invertors and microphones. Read more about inverters.96). A capacitors was invented by___? Georg von Pieter van Leyden Harry HintPieter van is a scientist in the year 1745 invented a capacitor.97). A capacitor has ___ number of conductors? 2 3 4 5 HintA capacitor has 2 conductors also know as 2 parallel type plates separated with a distance.98). A capacitor is represented using ____ formula? C=Q/V C=QV C=Q-V C=Q+V HintA capacitor is represented using C=Q/V.99). A capacitor are of ___ types? 2 3 4 5 HintA capacitor are of 2types namely static and dynamic capacitors.100). A non polarized type capacitor is of ___ types? 2 3 4 5 HintA nonpolarized type capacitor is of 2 types namely plastic-type foil-based nonpolarized capacitor and electrolytic type nonpolarized capacitor. Time is Up! Time's up

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