An inductor L and a resistor R are connected in series to an ideal battery. A switch in the circuit is closed at t = 0,

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An inductor L and a resistor R are connected in series to an
ideal battery. A switch in the circuit is closed at t = 0, and the
current is zero. The energy stored in the inductor is maximum:
A.
a time t = 2L/R after the switch is closed
B.
a time t = R/L after the switch is closed
C.
a long time after the breaker is closed.
D.
after the breaker is closed
E.
a time t = L/R after the circuit breaker is closed.