Q.

As shown in figure, a magnet is moved with some speed towards a coil at rest. Due to this induced emf, induced current and induced charge in the coil are E, I and Q respectively. If the speed of the magnet is doubled, the incorrect statement is / are

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a

E increases

b

I increases

c

Q remains same

d

Q increases

answer is D.

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Detailed Solution

When speed of magnet is doubled then induced E.M.F. will increase and induced current will increase but charge will remain constant (law of conservation of charge) so the incorrect statement is option (d)

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