question_answer

The potential of the electric Held produced by point charge at any point \[(x,y,z)\] is given by\[V=3{{x}^{2}}+5\], where \[x,y\] are in metres and V is m volts. The intensity of the electric Held at \[(-2,1,0)\] is

A)  \[+17\text{ }V{{m}^{-1}}\]                         

B)  \[-17\text{ }V{{m}^{-1}}\]

C)  \[+12\text{ }V{{m}^{-1}}\]                         

D)  \[-12\text{ }V{{m}^{-1}}\]