Three charges `2q,-q,-q` are located at the vertices of an equilateral triangle. At the centre of the triangle.

Options

A. The Field is Zero but Potential is non-zero
B. The Field is non - Zero but Potential is zero
C. Both Field and Potential are Zero
D. Both field and Potential are non-Zero

Answer

B

Explanation

From charge configuration, electric field is non-zero. Potential at the centre due to 2q charge
`V_(2q)=(2q)/(r)andV_(-q)=(-q)/(r ) therefore` Total potential `V=V_(2q)+V_(-q)+V_(-q)=0`