A coil of resistance 10 Q and inductance 10 H and a battery of emf...

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A coil of resistance 10 Q and inductance 10 H and a battery of emf V are connected in series through a switch k After the steady state the switch is opened The voltage falls to zero value in 2 millisecond and the induced emf is 2000 V Find the emf of the battery Options 01 V O 1 5 V 0 4 V O 2 5 V

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