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  3. 3. an inductor/resistor circuit is powered by a di

3. An inductor/resistor circuit is powered by a direct current EMF of 3.00 V until the...

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Physics

3. An inductor/resistor circuit is powered by a direct currentEMF of 3.00 V until the inductor is fully powered. The decaycoefficient of the circuit is 2.15 ms. The inductor has a value of140 mH.

a) After the EMF is turned off, how long does it take thecurrent in the circuit to drop from a max of 46.2 mA to 11.5mA?

b) What is the value of the resistor?

c) If the inductor has a length of 0.75 cm and 3000 loops, whatis its cross sectional area?

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