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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 :

$\begin {array} {1 1} (1)\;12 \pi \in_0\: Q \times 10^{22}\: volt/m & \quad (2)\;4 \pi \in_0\: Q \times 10^{22}\: volt/m \\ (3)\;12 \pi \in_0\: Q \times 10^{20}\: volt/m & \quad (4)\;4 \pi \in_0\: Q \times 10^{20}\: volt/m \end {array}$

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