A long solenoid of length 8m with a cross-sectional area of5.0 x 10 -5 m 2 conta

Question

A long solenoid of length 8m with a cross-sectional area of5.0 x 10 -5 m2 contains atotal of 52,000 turns a) find the self-inductance of the solenoid assumingthat the core of the solenoid is air. b) if the current in the winding starts at 0 A and isincreased steadily to 1.5 in a time of 0.20 sec. what is the EMFinduced in the solenoid? A long solenoid of length 8m with a cross-sectional area of5.0 x 10 -5 m2 contains atotal of 52,000 turns a) find the self-inductance of the solenoid assumingthat the core of the solenoid is air. b) if the current in the winding starts at 0 A and isincreased steadily to 1.5 in a time of 0.20 sec. what is the EMFinduced in the solenoid?

Explanation / Answer

l = 8 m, A = 5.0 x 10 -5 m2, N =52,000 turns a) the self-inductance L =oN2A/l = 2.12*10-2H b) emf = -LI/t = -L(1.5 - 0)/0.20 = -0.159 V

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