Question

At a point in space, the electric field points towards north. In the region surrounding this point, the rate of change of potential will be zero along -

• A. North
• B. South
• C. North-South
• D. East-West

Answer 1

Answer: (D)

East-West

Answer 2

E_{east-west = 0} Ž $\left( \frac{dv}{dr} \right)_{east - west}$ = 0