A conducting ring is placed around the core o | vedclass

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(C) When key $K$ is pressed,the current through the electromagnet starts increasing. This leads to an increase in the magnetic flux linked with the co

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Jumps out of the core

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(C) When key $K$ is pressed,the current through the electromagnet starts increasing. This leads to an increase in the magnetic flux linked with the conducting ring. According to Lenz's Law,the induced current in the ring will flow in such a direction as to oppose this increase in flux. This creates a magnetic pole on the ring that is the same as the pole of the electromagnet facing it,resulting in a repulsive force. Consequently,the ring experiences an upward force and jumps out of the core.

$A$ conducting ring is placed around the core of an electromagnet as shown in the figure. When key $K$ is pressed,the ring

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