How many time constants Will it take to completely build a magnetic field around an inductor?
A)1
B)2
C)3
D)4
E)5

Question

Quizplus · Accepted Answer

It takes 5 time constants for an inductor to completely build its magnetic field or for a capacitor to fully charge or discharge. This is a rule of thumb in electronics, indicating that the current or voltage reaches approximately 99.3% of its final value after 5 time constants.

How Many Time Constants Will It Take to Completely Build