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Problem 39 Easy Difficulty

The current in a coil drops from 3.5 A to 2.0 A in 0.50 s. If the average emf induced in the coil is 12 mV, what is the self-inductance of the coil?

Answer

0.004 \mathrm{H}

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Video Transcript

All right. So the induced enough physical to induct Inzell Times the rate of change off current Um huh, which can be written as Delta I over Delta t rearranging this equation to get inductions inducted Sequel That, uh, the M F times Delta t over Delta I. So now we plug in values. M f is 12 1,000,000 volts said. That's 12 times telling like of three votes. Ah, time taken his 0.5 seconds. And that's divided by a change in current, which is 1.5. And that's because 3.5 minus two ampere. That's the change, giving you an inductive of about four times in a negative. To me, her of Henry's. That's the moment this is equivalent to four Millie heavies. That's it.

New Mexico State University
Top Physics 102 Electricity and Magnetism Educators
Andy C.

University of Michigan - Ann Arbor

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Liev B.

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