During the period of time known as the first time constant of an exponential curve, the current will rise to about _____ percent of its full value.

A) 50
B) 31.8
C) 100
D) 63.2

Exponential Curve

A natural curve that is the rate at which current can rise or fall in an inductor or the rate of charge and discharge for a capacitor.

Time Constant

The amount of time required for the current flow through an inductor or for the voltage applied to a capacitor to reach 63.2% of its total value.