QUESTION $2$

Two point charges, $Q_1$ and $Q_2,$ are separated by a distance $R.$ If the magnitudes of both charges are doubled and their separation is also doubled, what happlens to the electrical force that each charge exerts on the other one?

It increases by a factor of $2.$

It increases by a factor of $\sqrt[\phantom{2}]{2}.$

It is reduced by a factor of $\sqrt[\phantom{2}]{2}.$

It increases by a factor of $4.$

It remains the same.