(Answered) Determine the energy associated with the magnetic field of

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Determine the energy associated with the magnetic field of a 200-turn solenoid in which a current of 1.75 A produces a flux of 3.7 x 10⁴ Wb in each turn.

The self-induced emf in a .2-H coil when the current in it is changing at the rate of 200 A/S is

(a) 20V

(b) 40V

(d) 400V

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