Out of the following which law obeys the law of conservation of energy? (a) Kirchhoff's 1 st law in electricity. (b) Lenz's law in induction. (c) Ampere's circuital law. (d) Gauss's law in electrostatics.

Answer: (b). Lenz's law: the induced current opposes the change causing it, so work must be done against it. This work appears as electrical energy; if the induced current aided the change, energy would be created from nothing. So the answer is (b) Lenz's law.

Out of the following which law obeys the law of conservation of… | MHT CET 2025 (19 Apr, Shift 2)

Q6MHT CET 2025 · 19 APR · SHIFT 2Easy

Lenz's Law, Eddy Currents & Induced Electric Field

Out of the following which law obeys the law of conservation of energy?

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Answer: (b)

Lenz's law: the induced current opposes the change causing it, so work must be done against it.
This work appears as electrical energy; if the induced current aided the change, energy would be created from nothing.
So the answer is (b) Lenz's law.

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