A Series RL Circuit with Inductance L and Resistance R

Multiple Choice

A series RL circuit with inductance L and resistance R is connected to an emf V. A second series circuit connected to the same emf V is identical except that its resistance is 4R. The ratio of the time constant of the first circuit to the time constant of the second circuit is

A) 4
B) 2
C) 1
D) 0.5
E) 0.25