Problem: Which of the following statements about inductors are correct?A) When an inductor and a resistor are connected in series with a DC battery, the current in the circuit is reduced to zero in one time constant.B) When it is connected in a circuit, an inductor always resists having current flow through it.C) An inductor always resists any change in the current through it.D) When an inductor and a resistor are connected in series with a DC battery, the current in the circuit is zero after a very long time.E) Inductors store energy by building up charge.

FREE Expert Solution

Induced emf to oppose any current change:

$\overline{){\mathbf{\epsilon }}{\mathbf{=}}{\mathbf{-}}{\mathbf{L}}\frac{\mathbf{d}\mathbf{i}}{\mathbf{d}\mathbf{t}}}$

Problem Details

Which of the following statements about inductors are correct?

A) When an inductor and a resistor are connected in series with a DC battery, the current in the circuit is reduced to zero in one time constant.

B) When it is connected in a circuit, an inductor always resists having current flow through it.

C) An inductor always resists any change in the current through it.

D) When an inductor and a resistor are connected in series with a DC battery, the current in the circuit is zero after a very long time.

E) Inductors store energy by building up charge.