Question

Two negative charges of unit magnitude and a positive charge q are placed along a straight line. The charge q is placed between negative charges as such the system of charges is in equilibrium. This system is in: (a) stable equilibrium for the displacement of charge q in the normal direction of line joining the negative charges (b) unstable equilibrium for the displacement of charge q in the normal direction of line joining the negative charges (c) stable equilibrium for the displacement of charge q in the direction of line joining the negative charges (d) neutral equilibrium for the displacement of charge q along the line joining the negative charges

Answer 1

(a) stable equilibrium for the displacement of charge q in the normal direction of line joining the negative charges.

At negative charges of unit magnitude and a positive charge q are placed along a straight line.

The charge q is placed between negative charges as such the system of charges is in equilibrium will be stable equilibrium for the displacement of charge q in the normal direction of line joining the negative charges