List of top Physics Questions on potential energy asked in AMUEEE

The electric field in a region is given by $\overrightarrow {E} = \left(\frac{A}{x^{3}}\right) \hat{i} $ An expression for the potential in the region assuming the potential at infinity to be zero is

The potential energy of $ 4 $ -particles each of mass $ 1\,kg $ placed at the four vertices of a square of side length $ 1\,m $ is