Three positive charges of equal magnitude are placed at the vertices of an…
PHYSICS · Single correct · CBSE · Physics · Electric Charges and Fields · Electric Charges and Fields
Problem
Three positive charges of equal magnitude q are placed at the vertices of an equilateral triangle of side l. How can the system of charges be placed in equilibrium?
(1) by placing a charge Q=−q/3 at the centroid of the triangle
(2) by placing a charge Q=q/3 at the centroid of the triangle
(3) by placing a charge Q=q at a distance l from all the three charges
(4) by placing a charge Q=−q above the plane of the triangle at a distance l from all the three charges