An inductance L, resistance R, and ideal battery of emf are wired in series.A switch in the circuit is closed at time t = 0, at which time the current is zero.At any later time t the current i is 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)

Question

Quizplus · Accepted Answer

The current in an RL circuit after closing the switch is given by i(t) = (emf/R)(1 - e^(-Rt/L)), which matches option E.

An Inductance L, Resistance R, and Ideal Battery of Emf