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. After a time the current reaches a final value of 2.0 A. A second series circuit is identical except that the inductance is 2L. When the second circuit is connected to the same emf V, the final value of the current will be

A) 1.0 A
B) 2.0 A.
C) 4.0 A.
D) 8.0 A.