KCET · Physics · Waves and Sound
A bar magnet is allowed to fall verticallythrough a copper coil placed in a horizontalplane. The magnet falls with a net acceleration
- A \(=g \)
- B \(>\mathrm{g} \)
- C \( < g \)
- D Zero
Answer & Solution
Correct Answer
(C) \( < g \)
Step-by-step Solution
Detailed explanation
According to Lenz's law, as the magnet falls it induces an emf in the coil which opposes the motion of the bar magnet.
Therefore, the net acceleration is less than \( \mathrm{g} \).
Therefore, the net acceleration is less than \( \mathrm{g} \).
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