Question

The angle between electric lines of force and equipotential surface is :

• A. 0${}^o$
• B. 180${}^o$
• C. 90${}^o$
• D. 45${}^o$

Answer 1

Answer: (C)

90${}^o$

All points on an equipotential surface have the same electric potential. And electric potential changes as you move along the field lines. Therefore, equipotential surfaces are perpendicular to electric lines of force.