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Question
A copper ring having a cut such as not to form a complete loop is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. Then acceleration of the falling magnet is -(neglect air friction)
A copper ring having a cut such as not to form a complete loop is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. Then acceleration of the falling magnet is -(neglect air friction)
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Solution
The correct option is A g
As the ring is not continuous, the emf will generate in the ring but due to incomplete circuit, no current will flow. As no current flows, no magnetic field will generate and the motion of the bar magnet will not be opposed.Thus, the bar magnet will continuously fall freely under the gravity only.
Therefore, the acceleration of the falling magnet will be equal to the acceleration due to gravity g.
As the ring is not continuous, the emf will generate in the ring but due to incomplete circuit, no current will flow. As no current flows, no magnetic field will generate and the motion of the bar magnet will not be opposed.
Thus, the bar magnet will continuously fall freely under the gravity only.
Therefore, the acceleration of the falling magnet will be equal to the acceleration due to gravity g.
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