An Inductance L and a Resistance R Are Connected in Series

question 14

Multiple Choice

An inductance L and a resistance R are connected in series to an ideal battery. A switch in the circuit is closed at time 0, at which time the current is zero. The energy stored in the inductor is a maximum:

• A) just after the switch is closed
• B) at the time t = L/R after the switch is closed
• C) at the time t = L/R² after the switch is closed
• D) at the time t = 2L/R after the switch is closed
• E) a long time after the switch is closed

---

Definitions:

Percentage

A numerical expression or ratio indicating a portion of 100.

Percent

A mathematical term describing a number or ratio expressed as a fraction of 100.

Improper Fraction

A fraction where the numerator is greater than or equal to the denominator.

Numerator

The top number in a fraction that indicates the number of parts considered, relative to the denominator.