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 potential difference across the resistor is given by: A)(1 - e^-Lt^/^R) B)e^-^Lt^/^R C)(1 + e^-Rt^/^L) D)e^-Rt^/^L E)(1 - e^-Rt^/^L)

Question

Quizplus · Accepted Answer

The potential difference across the resistor in an RL circuit is given by V_R = I(t)R, where I(t) = (emf/R)(1 - e^(-Rt/L)) is the current at time t. Thus, the potential difference is (emf)(1 - e^(-Rt/L)).

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