If a coil that carries 10A, when the switch is open (circuit is disconnected) the current...

Question

Question

If a coil that carries 10A, when the switch is open (circuit is disconnected) the current drops to 0A in 2 ms.

What is the inductance of the coil if the average induced emf (ε) is 9V?

What is the energy stored in the magnetic field?

Answer 1

Answer #1

11 Induced emf et at =L Inductance Nod = ΔΙ A > emf L st » L LE emf dI/dt 1%x103 E 9x2x103 10 H L : 1.8x10-3 H En ergy stored

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Answer 2

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