Question

Two point charges of magnitude $+{10}^8$ coulomb each are placed 0.5 metre in air. At the mid point of line joining then

• A. The field is zero, the potential is zero
• B. The field is zero, the potential is not zero
• C. The field is zero the potential is -720
• D. The field is zero the potential is + 720

Answer 1

The correct option is A The field is zero, the potential is zero

At midpoint $O$ of the separation $E$ will be zero.

as Electric field due to $A$ at $O$ is right words which due to $B$ is equivalent and left wards.

Resultant =0