The electric potential at a point in free space due to charge $Q$ coulomb is $Q imes 10^{11}$ volt

Question

The electric potential at a point in free space due to charge $Q$ coulomb is $Q 	imes 10^{11}$ volts. The electric field at that point is

Professor PC Thomas Classes · Answer

$V=\frac{1}{4 \pi \varepsilon_{0}} \cdot \frac{Q}{r}=Q .10^{11}$ volts $	herefore \frac{1}{r}=4 \pi \varepsilon_{0} 	imes 10^{11}$
$E=\frac{	ext { potential }}{r}=Q \cdot 10^{11} 	imes 4 \pi \varepsilon_{0} \cdot 10^{11}$
$\Rightarrow E=4 \pi \varepsilon_{0} \cdot Q \cdot 10^{22}$ volt $/ \mathrm{m}$