Physics

Problem

The electric potential at a point in free space due to a charge

Q

coulomb is

Q \times 10^{11}

volts. The electric field at that point is: (2008) a.

12\pi\epsilon_0 Q \times 10^{22}

volt/m b.

4\pi\epsilon_0 Q \times 10^{22}

volt/m c.

12\pi\epsilon_0 Q \times 10^{20}

volt/m d.

4\pi\epsilon_0 Q \times 10^{20}

volt/m