An Inductance L and a Resistance R Are Connected in Series

question 47

Multiple Choice

An inductance L and a resistance R are connected in series to an ideal battery.A switch in the circuit is closed at time t = 0, at which time the current is zero.The rate of increase of the energy stored in the inductor is a maximum:

• A)just after the switch is closed
• B)at the time t = L/R after the switch is closed
• C)at the time t = 2L/R after the switch is closed
• D)at the time t = (L/R)ln 2 after the switch is closed
• E)a long time after the switch is closed

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