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Physics · Unit 3 · Electromagnetism · Electrostatics

Explain how Lenz’s Law is consistent with the principle of conservation of energy.

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Question 1

A conducting loop is moved at constant velocity into a region of uniform magnetic field directed into the page, as shown in the diagram below. According to Lenz's Law, the induced current produces a magnetic field that opposes the change in flux. Which statement best explains how this opposition is consistent with conservation of energy?

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Question 2

A magnet is dropped through a copper ring. The induced current in the ring creates a magnetic field that opposes the motion of the falling magnet. How does this outcome demonstrate consistency with the principle of conservation of energy?

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Question 3

When a magnet is pushed toward a stationary conducting coil, an induced current flows through the coil. This induced current produces a magnetic field that opposes the motion of the magnet. Which statement best explains how this scenario demonstrates consistency between Lenz's Law and the principle of conservation of energy?

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