$A$ charge $Q$ is placed at the centre of a circle of radius $10 \ cm$. Find the work done in moving a charge $q$ between any two points lying on the arc of the circle.

Which of the following statements is not true?

$A$ point charge is placed at point $P$ as shown in the figure. $A$ hollow conducting sphere is placed in the electric field produced by it. If $V_A$,$V_B$,and $V_C$ are the potentials at points $A$,$B$,and $C$ respectively,then:

As shown in the figure below,a charge $+2 \text{ C}$ is situated at the origin $O$ and another charge $+5 \text{ C}$ is on the $x$-axis at point $A(2, 0) \text{ m}$. The charge at point $A$ is then moved to point $B(0, 2) \text{ m}$ on the $y$-axis. Calculate the work done. (Given $\frac{1}{4 \pi \varepsilon_{0}} = 9 \times 10^{9} \text{ N m}^2/\text{C}^2$)

$A$ square of side $a$ has a charge $Q$ at its centre. $A$ charge $q$ is placed at one of the corners. The work required to be done in moving the charge $q$ from this corner to the diagonally opposite corner is

The points having equal potentials are: