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A long solenoid of radius R carries ...

A long solenoid of radius R carries a time (t) - dependent current I(t) = ` I _ 0 t ( 1 - t )`. A ring of radius 2R is placed coaxially near its middle. During the time interval ` 0 le t le 1 `, the induced current ` ( I _ R ) ` and the induced EMF ` ( V _ R) ` in the ring change as :

A

Direction of `I_R` remains unchanged and `V_R` is maximum at t = 0.5

B

At t = 0.25 direction of `I_R` reverses and `V_R` is maximum

C

Direction of `I_R` remains unchanged and `V_R` is maximum at t = 0.25

D

At t = 0.5 direction of `I_R` reverses and `V_R` is zero

Text Solution

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The correct Answer is:
D
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