Q.
The metallic ring shown in figure is suspended by an insulated thread and a bar magnet is held stationary inside the ring. If the magnet is quickly taken out of the ring to the right, then
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a
The ring will remain stationary
b
The ring will rotate about its vertical diameter
c
The ring will swing to the right
d
The ring will swing to the left.
answer is C.
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Detailed Solution
Clockwise current (as viewed from left) will be induced in the ring. As result the left face of the ring will behave like a south pole and the right face will behave like a north pole. So the net magnetic force on the ring will point in the right and the ring will swing to the right.
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