Question

A series RL circuit consists of a 6.3 volt battery, a 175 ohm resistor and an...

A series RL circuit consists of a 6.3 volt battery, a 175 ohm resistor and an inductor.

(a) If the battery has been connected for a long time interval, what is the current in the circuit?

(b) The battery is then removed from the circuit, so only the resistor and the inductor are connected in series. What is the inductance of the inductor if the current drops to half of its peak value in 2.00 ms?

(c) The current is then allowed to decrease to approximately zero and the battery is then reconnected. What time interval is required for the energy stored in the inductor to reach 90 percent of its maximum value?

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