An aluminium ring B faces an electromagnet A. | vedclass

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(C) According to Lenz's law,the induced current in the ring $B$ will always oppose the change in magnetic flux linked with it.If the current $I$ in th

Vedclass · Accepted Answer

If $I$ increases,$A$ will repel $B$.

Vedclass · Answer

(C) According to Lenz's law,the induced current in the ring $B$ will always oppose the change in magnetic flux linked with it.If the current $I$ in the electromagnet $A$ increases,the magnetic flux through the ring $B$ increases. To oppose this increase,the ring $B$ will develop a magnetic pole such that it repels the electromagnet $A$.If the current $I$ in the electromagnet $A$ decreases,the magnetic flux through the ring $B$ decreases. To oppose this decrease,the ring $B$ will develop a magnetic pole such that it attracts the electromagnet $A$.Therefore,if $I$ increases,$A$ will repel $B$.

An aluminium ring $B$ faces an electromagnet $A$. The current $I$ through $A$ can be altered. Which of the following statements is correct?

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