Consider the following statements

1. Kirchhoff's Voltage Law is based on Kirchoff’s second law.

2. Kirchoff’s second law represents the conservation of energy.

Which of the following statements is/are correct?

Question

Question

Answer 1

CONCEPT:

There are two types of Kirchoff’s Laws:

Kirchoff’s first law:

This law is also known as junction rule or current law (KCL). According to it the algebraic sum of currents meeting at a junction is zero i.e. Σ i = 0.

F2 P.Y Madhu 16.04.20 D 3

In a circuit, at any junction, the sum of the currents entering the junction must be equal the sum of the currents leaving the junction i.e., i1 + i3 = i2 + i4
This law is simply a statement of “conservation of charge” as if current reaching a junction is not equal to the current leaving the junction, the charge will not be conserved.

Kirchoff’s second law:

This law is also known as loop rule or voltage law (KVL) and according to it “the algebraic sum of the changes in potential in a complete traversal of a mesh (closed-loop) is zero”, i.e. Σ V = 0.
This law represents “conservation of energy” as if the sum of potential changes around a closed loop is not zero, unlimited energy could be gained by repeatedly carrying a charge around a loop.
If there are n meshes in a circuit, the number of independent equations in accordance with the loop rule will be (n - 1).

EXPLANATION:

From above it is clear that Kirchoff’s second law is also known as loop rule or voltage law (KVL). Therefore statement 1 is correct.
From above it is clear that Kirchoff’s second law represents “conservation of energy” as if the sum of potential changes around a closed loop is not zero, unlimited energy could be gained by repeatedly carrying a charge around a loop. Therefore statement 2 is correct.