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A solenoid having self inductance 8H is ...

A solenoid having self inductance 8H is connected to a battery through a switch. When switch is closed , current through the solenoid increases from 0 to 5 A in 0.2 s.
Magnitude of induced emf produced in the solenoid is :

A

2V

B

20 V

C

200 V

D

2000 V

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