question_answer

The electric potential V(x) in a region around the origin is given by \[V(x)=4{{x}^{2}}\]volts. The electric charge enclosed in a cube of 1 m side with its centre at the origin is (in coulomb).   JEE Main Online Paper (Held On 07 May 2012)

A) \[8{{\varepsilon }_{0}}\]                                              

B)                        \[-4{{\varepsilon }_{0}}\]

C)                        0             

D)                        (d)\[-8{{\varepsilon }_{0}}\]