Question

Angle between an equipotential surface and electric lines of force is :

• A. $0^o$
• B. ${90}^o$
• C. ${180}^o$
• D. ${270}^o$

Answer 1

The correct option is B ${90}^o$

The angle between Electric field and an equi-potential surface is always ${90}^0$. This is because,when the potential becomes constant,the negative potential gradient also becomes zero,hence necessitating the need for Electric field to be always normal with surface.