MHT CET · Physics · Electromagnetic Induction
A copper ring is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is
- A more than acceleration due to gravity.
- B less than acceleration due to gravity.
- C depends on the diameter of ring and length of magnet.
- D depends on pole strength of magnet.
Answer & Solution
Correct Answer
(B) less than acceleration due to gravity.
Step-by-step Solution
Detailed explanation
Due to Lenz's Law, an induced current in the ring creates a magnetic field that opposes the falling motion of the magnet, resulting in an upward force. Thus, the net downward force on the magnet is less than its weight \( mg \).
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