Why we use a test charge of small magnitude?

Asked by Topperlearning User | 17th Apr, 2015, 10:23: AM

Expert Answer:

We use a test charge of small magnitude so that it does not disturb the distribution of the charges whose electric field we wants to measure otherwise the measured field will be different from the actual field.

Answered by  | 17th Apr, 2015, 12:23: PM