If an inductor, resistor and switch are connected in series to a 12 V battery, what is the magnitude of the inductor's voltage at the instant that the switch is closed?
A)4 V
B)0 V
C)6 V
D)12 V

Question

Quizplus · Accepted Answer

When the switch is first closed, the inductor initially opposes any change in current, resulting in the entire battery voltage (12 V) appearing across the inductor.

If an Inductor, Resistor and Switch Are Connected in Series