Question

The potential of the electric field produced by a point charge at any point (x, y, z) is given by; $V=3x^2-5$, where x, y, z are in metre and V is in volt. The intensity of the electric field at (-2, 1, 0) is:

• A. +17 V/m
• B. -17 V/m
• C. +12 V/m
• D. -12 V/m

Answer 1

The correct option is C +12 V/m

$E=-\frac{dV}{dx}$