Physics Current Electricity Kirchhoff's Law, EMF of The Cells, Internal Resistance Single Correct MCQ
Published on: September 12, 2026

Kirchoff’s I law and II law of current, proves the

A
Conservation of charge and energy
B
Conservation of current and energy
C
Conservation of mass and charge
D
None of these

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Text Solution

Verified by Experts
The correct answer is:
A
Step 1: Understand Kirchhoff's laws.
Kirchhoff’s First Law (KCL) states that the total current entering a junction equals the total current leaving the junction, thus illustrating the principle of charge conservation.
Step 2: Analyze Kirchhoff’s Second Law (KVL).
KVL states that the sum of the electromotive forces (EMFs) in any closed loop circuit is equal to the sum of the potential drops, illustrating the principle of energy conservation in an electrical circuit.
Conclusion: Since KCL addresses charge conservation and KVL addresses energy conservation, the correct answer encapsulates both these principles.
Therefore, the answer is A: Conservation of charge and energy.

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