Watch Free Classes

Kirchhoff’s Current law: 

The current coming into a node (or a junction) would have to be equal to the total current flowing out of it, according to this law. Charge conservation is the base of this law.

Kirchhoff’s Voltage law: 

The sum of all voltages across components that supply electrical energy (such as cells or generators) in any closed loop inside a circuit must match the sum of all voltages across other components in the same loop, according to this law. This law is based on the conservation of both charge and energy.

MCQs

  1. KCL is founded on the idea that
  1. A node has the ability to store energy.
  2. There can’t be any charge accumulation at a node.
  3. At the node, charge buildup is possible.
  4. Accumulation of charges may not be feasible.

Answer: Correct option will be: (b) There can’t be any charge accumulation at a node.

Reason: Any charge that enters the node must exit immediately because it is not a circuit element.

2. In a network, the algebraic summation of voltages around any closed path equals

  1. 1
  2. 0
  3. Negative polarity

Answer: Correct option will be: (c) 0

Reason: The summation of voltages around a closed path in a network, according to KVL, is zero.

3. The following are the fundamental laws for studying an electric circuit:

  1. Theory of Einstein
  2. Laws of Newton
  3. Kirchhoff’s laws
  4. Faraday’s laws

Answer: Correct option will be: (c) Kirchhoff’s laws

4. A junction or a point where two (or more) network elements intersect is called as:

  1. Node
  2. Branch
  3. Loop
  4. Mesh

Answer: Correct option will be: (a) Node

5. Kirchhoff’s first law is which of the following?

  1. KCL
  2. KVL
  3. Both a and b
  4. None of the mentioned

Answer: Correct option will be: (a) KCL

6. Which of the following formulas defines KCL, where i1, i2 represent incoming currents and i3, i4 represent outgoing currents from a circuit node?

  1. i1+i2=i3+i4
  2. i1+i3=i2+i4
  3. i1-i2=i3-i4
  4. i4-i1=i2+i3

Answer: Correct option will be: (a)i1+i2=i3+i4

7. Kirchhoff law calculates which of the given electric parameters?

  1. Voltage
  2. Resistance
  3. Current 
  4. Both and c

Answer: Correct option will be: (d) Both a and c

8. The resistance of an electric circuit is calculated using which of the following laws?

  1. Kirchhoff’s voltage law
  2. Kirchhoff’s current law
  3. Ohm’s law
  4. Both a and b

Answer: Correct option will be: (c) Ohm’s law

9. In DC circuit theory, which term describes how elements are connected?

  1. Path
  2. Node
  3. Branch
  4. Loop

Answer: Correct option will be: (c) Node

Reason: In DC circuit theory, a node term is the connection between the number of electrical elements.

10 In DC circuit theory, which of the following terms connects nodes?

  1. Path
  2. Node
  3. Branch
  4. Loop

Answer: Correct option is (c) Branch.

Reason: In DC circuit theory, a branch is the connection between the number of nodes.

11. When 5, 10, and 15 resistors are connected in series with a 12V voltage source, what is the value voltage across resistor 5?

  1. 12V
  2. 21V
  3. 15V
  4. 2V

Answer: Correct option will be: (d) 2V

12. In a parallel-configured circuit, the current value is:

  1. High
  2. Low
  3. Zero
  4. Infinity

Answer: Correct option will be: (a)High.

Reason: In a parallel configured circuit, as the load is connected parallelly the equivalent resistance of the circuit becomes less which increases the current in the circuit.

13. Which of the following statements is correct?

  1. Kirchhoff’s law states that the current traveling towards a junction equals the voltage drop.
  2. The current flowing towards a junction is equal to the resistance across the junction, according to Kirchhoff’s law.
  3. The current flowing into a junction is equal to the current exiting the junction, according to Kirchhoff’s law.
  4. Kirchhoff’s law states that the current traveling towards a junction is equal to the sum of all currents in the circuit.

Answer: Correct option will be: (c)

14. In the presence of a magnetic field, are Kirchhoff’s laws applicable?

  1. True
  2. False

Answer: Correct option will be: (b) False.

Reason: In the presence of a magnetic field, Kirchhoff’s law does not apply. Because Kirchhoff’s law assumes that magnetic fields is not present in closed loops, this is the case. As a result, when there are time-varying magnetic fields, this law cannot be used.

15. The algebraic total of all IR drops and e.m.f s in every closed loop of a network is always equal to zero, according to Kirchhoff’s voltage law.

  1. Negative
  2. Positive
  3. Dependent on the EMF of the battery
  4. 0

Answer: Correct option will be: (d) 0.

16. The voltage law of Kirchhoff is applied to a circuit with:

  1. Linear circuit
  2. Non- Linear circuit
  3. Linear, non- linear, active and passive elements
  4. Linear, non- linear, active, passive time- variant as well as time invariant elements

Answer: Correct option will be: (d)

17. Kirchhoff’s laws do not apply to circuits with:

  1. Parameters that are distributed
  2. Parameters grouped together
  3. Elements that are passive
  4. Non-linear resistances

Answer: Correct option will be: (a) Parameters that are distributed.

18. What number of equations will be needed to solve the network in nodal analysis if there are a total of N nodes in the circuit?

  1. N-1
  2. N+1
  3. N
  4. N-2

Answer: Correct option will be: (a)N-1

19. A circuit is made up of active and passive components, as well as voltage sources, and is solved using a certain theorem.

  1. Node
  2. Complex network
  3. Branch
  4. Active network

Answer: Correct option will be: (b) Complex network.

19.What are the different elements such as resistance, inductance and capacitance that are used in a circuit called?

  1. Parameters
  2. Constants
  3. Both a & b are correct
  4. None of the mentioned

Answer: Correct option will be(c) Both a & b are correct.