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 None Hint2). Which of the following is a Kirchhoff’s first law? KCL KVL Current law Both a and c None Hint3). Which of the following is Kirchhoff’s second law? KCL KVL Current law Both a and c None Hint4). 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 None Hint5). 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 None Hint6). 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 None Hint7). Which of the following electric parameters do Kirchhoff law calculate? Voltage Resistance Current Both a and c None HintRead more about circuits. 8). Which of the following law calculates resistance of electric circuit? Ohms law KCL KVL Both b and c None Hint9). A circuit is a ____ loop? Short circuited Closed Opened Both a and b None Hint10). Which of the following term in DC circuit theory connects elements? Path Node Branch Loop None Hint11). Which of the following term in DC circuit theory connects number of electrical elements? Path mesh Branch Loop None Hint12). Which of the following term in DC circuit theory connects between nodes? Path Mesh Branch Loop None Hint13). Which of the following term in DC circuit theory is a closed type path? Path Mesh Branch Loop None Hint14). Which of the following term in DC circuit theory does not have closed type path? Path Mesh Branch Loop None Hint15). Which of the following is the application of Kirchhoff’s law? Determine current in circuit Determine potential drop Determine current direction All the above None HintRead 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 None 17). Which of the following law is used for analyzing a circuit? Kirchhoff’s law Newtons law Faradays law Ohms law None Hint18). The value of current in a parallel configured circuit is _______? High Low Zero Infinity None Hint19). 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 None Hint20). KVL principle converts ___ parameter? Energy Mass Charge Momentum None Hint21). KVL is performed using___? Nodal analysis Mesh analysis Both a and b Voltage analysis None Hint22). KCL is applied to ____? Non planar networks Planar networks Both a and b Node networks None Hint23). 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 None 24). Which of the following are the components of KVL or KCL circuits? VI sources Resistors Wires All the above None HintRead 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 None HintKirchhoff Law Important MCQs26). An ideal current source provides ____ value of current? Minimum Maximum Zero Infinity None Hint27). An ideal voltage source provides ___ value of voltage? Minimum Maximum Zero Infinity None Hint28). An ideal resistor has ___ value of resistance? Minimum Maximum Zero Infinity None Hint29). Which of the following is used for representing Kirchhoff’s equations? Integration Differentiation Matrix Both a and b None Hint30). Mesh analysis has ___ steps? 2 3 5 6 None Hint31). 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 None Hint32). 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 None Hint33). 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 None Hint34). A nodal analysis can be performed in ___ steps? 2 3 4 5 None Hint35). 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 None Hint36). 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 None Hint37). 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 None Hint38). 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 None Hint39). 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 None Hint40). 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 None Hint41). Which of the following parameter is used for performing analysis process? Current Voltage Resistance Both a and b None Hint42). A star type configuration of electrical circuit has ___ ports? 1 2 3 4 None Hint43). A delta type configuration of electrical circuit has ___ ports? 1 2 3 4 None Hint44). How many nodes do star network have? 2 3 4 5 None Hint45). How many nodes do a delta network have? 1 2 3 4 None Hint46). 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 None Hint47). Which of the following field derives Kirchhoff’s loop law? Electrical Magnetic Electrostatic Electro magnetic None Hint48). Which of the following law is used with KCL? Ohms law Faraday law Coulomb’s law Both b and c None Hint49). Who introduced ohms law? George ohms Kirchhoff’s Fredrick Charles None Hint50). In which year ohms law was introduced? 1781 1788 1789 1777 None HintKirchhoff Law MCQs for Quiz51). Ohms law defines relation of ____ parameters of electrical circuit? Current Voltage Resistance All the above None HintRead more about ohms law.52). Which of the following is units of resistor? Ohms Volts Amperes Watts None Hint53). Which of the following is units of current? Ohms Volts Amperes Watts None Hint54). Which of the following is units of power? Ohms Volts Amperes Watts None Hint55). Potential difference in a circuit is also called as____? Voltage difference Electric pressure Electric tension All the above None Hint56). The value of 1 volt is _____? 1joule 1joule/1coulomb 1colomb All the above None Hint57). What is the SI unit of potential difference? Volt Amperes Volts per meter Ampere per meter square None Hint58). 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 None Hint59). Nodal analysis of an electric circuit is also called______? Node voltage analysis Branch current method Nodal analysis All the above None Hint60). Kirchhoff’s law can also be represented using______? Maxwell equation Quantum equations Hall effect All the above None Hint61). Faradays law is based on ___ principle? Electromagnetism Electro mechanical Mechanical Both a and b None Hint62). Which of the following is the application of electromagnetic induction? Inductors Transformers All the above None Hint63). Who implemented electromagnetic induction? Michael Faraday Harry Faraday Charles Farads All the above None Hint64). What is value of current if charge of 20 coulomb is sent through a point of 0.25seconds? 20A 80A 2A 10A None Hint65). 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 None Hint66). In how many types can a equivalent circuit be constructed? 2 3 4 1 None Hint67). Electrical representation of network graph is represented using______ types? 2 1 3 4 None Hint68). A matrix that represents an electrical circuit is called____? Incident matrix Fundamental cut set matrix Fundamental loop matrix Both b and c None Hint69). An incident matrix is also called as _____? Node incidence matrix Node to branch incidence matrix Node to node matrix Both a and b None Hint70). How many values do an incident matrix represents currents status in circuit? 2 3 1 4 None Hint71). 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 None Hint72). 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 None Hint73). 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 None Hint74). How steps are required to calculate an incident matrix? 2 1 3 4 None Hint75). 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 None HintKirchhoff 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 None Hint77). KVL law of idea is also called as _____? Conservation of energy Consumption of energy Divergence of power None of the above None Hint78). An electronic circuit consist of ___ types of components? 2 3 4 5 None Hint79). Which of the following component depends on external source to operate in an electric circuit? Active Passive Independent All the above None HintRead 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 None Hint81). Which of the following are the examples of passive components? Capacitors Resistors Coils All the above None Hint82). Which of the following are the examples of active components? Voltage source Current source Op-amps All the above None Hint83). How many types of voltage source are preset in an electrical circuit? 1 2 3 4 None Hint84). A voltage source supplying circuit with constant input voltage is called ___? AC source DC source Constant source Both b and c None Hint85). A voltage source supplying circuit with varying input voltage is called ___? AC source DC source Constant source Both b and c None Hint86). A current source in an electrical circuit are of ____ types? 2 3 1 4 None Hint87). A current source supplying circuit with varying input current is called ___? AC source DC source Constant source Both b and c None Hint88). A current source supplying circuit with constant input current is called ___? AC source DC source Constant source Both b and c None Hint89). An electrical component that blocks the flow of current is called______? Capacitor Resistor Inductor Transistor None HintRead more about resistors.90). An electrical component that stores charge in circuit is called______? Capacitor Resistor Inductor Transistor None Hint91). An electrical component that prevents abrupt changes in circuit is called______ Capacitor Resistor Inductor Transistor None Hint92). A resistor is classified into ___ types? 2 3 4 5 None Hint93). Which of the following are the examples of resistors? Thermistors Varistor Diodes All the above None Hint94). A varistors are classified into ___ types? 2 3 4 5 None HintRead more about varistor.95). Which of the following is the application of capacitor? Batteries Microphones Inventors All the above None HintRead more about inverters.96). A capacitors was invented by___? Georg von Pieter van Leyden Harry None Hint97). A capacitor has ___ number of conductors? 2 3 4 5 None Hint98). A capacitor is represented using ____ formula? C=Q/V C=QV C=Q-V C=Q+V None Hint99). A capacitor are of ___ types? 2 3 4 5 None Hint100). A non polarized type capacitor is of ___ types? 2 3 4 5 None Hint Time's up
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