A Series Circuit Consists of an Open Switch, an Ideal $\varepsilon _ { 0 }$

Multiple Choice

A series circuit consists of an open switch, an ideal emf source $\varepsilon _ { 0 }$ , a $5.0 - \mathrm { k } \Omega$ resistor, and a 4.0-H inductor. If the potential across the resistor is $65.0 \mathrm {~V}$ at $2.0 \mathrm {~ms}$ after the switch is closed, find the source emf, $\varepsilon _ { 0 }$ .

A) $56 \mathrm {~V}$
B) $36 \mathrm {~V}$
C) $76 \mathrm {~V}$
D) $71 \mathrm {~V}$