Measurements on a solenoid coil (inductor) at a particular instant in time indicate that the current in the inductor is 2.7 A and changing at 0.4 A/s, while the emf generated across the coil is 1.6 V. A) What is the inductance L of the coil? B) If the body of the coil is 1 inch long and ¼ inch in diameter, how many turns are there in the coil?

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A: a) The required self inductance is, L=μ0N2Al   =4π×10-75002π0.06220.20   =4.44 mH

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A: emf (E) = 21.3 volts L = 150 mH = 0.15 H t = 15.5 ms = 0.0155 s

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A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

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