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A 1.9-A current is flowing in a 24-H inductor. A switch opens, interrupting the current in...

A 1.9-A current is flowing in a 24-H inductor. A switch opens, interrupting the current in 1.0 ms.

Find the induced emf in the inductor.

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Answer #1

Inductance L = 24 H

Change in current di = 1.9 A

Tine interval dt = 1 ms = 1 * 10 -3 s

So, Induced emf E = -L di / dt

                             = -24 *1.9 / 10 -3 V

                             = 45.6 kV

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