If a circuit consisting of a resistor and induction in series has a DC current of 500mA following through it, and the switch in the circuit is suddenly open. What is the Inductive spike voltage induced in the inductor if the current reaches 0 A in 200 x 10-6 sec (200 micro second) and the Inductance, L =100mH? Hint: { Vemf =L di/dt} a) 250 V b) 500 V c) 1000V d) 10 V

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If a circuit consisting of a resistor and induction in series has a DC current of 500mA following through it, and
the switch in the circuit is suddenly open. What is the Inductive spike voltage induced in the inductor if the
current reaches 0 A in 200 x 10-6 sec (200 micro second) and the Inductance, L =100mH? Hint: { Vemf =L di/dt}
a) 250 V b) 500 V c) 1000V d) 10 V

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