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Question
An inductance L, resistance R, and ideal battery of emf 
are wired in series and the circuit is allowed to come to equilibrium. A switch in the circuit is opened at time t= 0, at which time the current is /R. At any later time tthe current iis given by:
A) (/R)(1 - e-Lt/R)
B) (/R)e-Lt/R
C) (/R)(1 + e-Rt/L)
D) (/R)e-Rt/L
E) (/R)(1 - e-Rt/L)
Answer
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