A bar magnet is released into a copper ring directly below it. The acceleration of the magnet will be
Show Hint
- equal to the acceleration due to gravity at that place
- less than the acceleration due to gravity at that place
- greater than the acceleration due to gravity at that place
- twice the acceleration due to gravity at that place
The Correct Option is B
Solution and Explanation
Lenz's law states that induced current opposes the change that produces it.
Step 2: Detailed Explanation:
As the magnet falls, the changing magnetic flux through the copper ring induces a current. This induced current opposes the motion of the magnet (Lenz's law), so the acceleration is less than $g$.
Step 3: Final Answer:
The acceleration is less than $g$.
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