Question

four identical charges are placed at the four vertices of a square.The number of null points will be​

Answer 1

The number of null points will be only one. It can be explained as follows:

• As per the question, four identical charges are placed at the four vertices of a square.

• Therefore, due to the principle of superposition, the electric field contributed by all the charges nullifies the net electric field at the center.

• Hence, the electric field will be zero at the center.