Question

Find the false statement.

(a) Sum of voltage over any closed loop is zero

(b) Kirchhoff’s Laws can be applied to any circuit, regardless of its structure and composition

(c) Kirchhoff’s 2^nd law is applied at nodes

(d) Kirchhoff’s 1^st law can be applied for both planar and non-planar circuits

This question was addressed to me in an online interview.

My question is from Kirchoff’s Law topic in division Current Electricity of Physics – Class 12

Answer 1

The correct option is (c) Kirchhoff’s 2^nd law is applied at nodes

For explanation I would say: Kirchhoff’s 2^nd year is applied in a closed loop. Kirchhoff’s 2^nd law supports the law of conservation of energy. This means that energy is neither created nor destroyed in the closed loop. Whatever energy enters the loop, same amount leaves the loop.