QQuestion
State Lenz’s law. “Lenz’s law actually follows the principle of conservation of energy.” — Justify. [1+2]
✓Answer
According to Lenz’s law, whenever there is a change in magnetic flux, the induced current always flows in a direction that opposes the change in magnetic flux.
For example, if a magnet is moved towards a coil, the induced current produces a magnetic field that opposes the approaching magnet. Therefore, an external force is required to keep the magnet moving.
If the induced current did not oppose the change, the magnet would continue to move on its own, producing electrical energy without any external work. This would violate the principle of conservation of energy.
Hence, Lenz’s law is consistent with the principle of conservation of energy.
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