Which of the following statements about inductors are correct and why?
a) Inductors store energy by building up charge.
b) 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.
c) 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.
d) An inductor always resists any change in the current through it.
e) When it is connected in a circuit, an inductor always resists having current flow through it.