The electric potential V at any point (x, y, z) in space is given by `V =3x^2` where x, y, z are all in metre. The electric field at the point (1 m, 0,2 m) is

Options

A. a. `6 V m^(-1)` along negative x-axis
B. b. `6 V m^(-1)` m along positive x-axis
C. c. 12 `V m^(-1)` makong negative x-axis
D. d. 12 `V m^(-1)` along positive r-axis

Answer

A