A positive charge $+ q$ is located at a point. What is the work done if a unit positive charge is carried once round this charge along a circle of radius $r$ about this point.

What would be the work done if a point charge $+q$, is taken from a point $A$ to the point $B$ on the circumference of a circle with another point charge $+q$ at the centre?

In the figure below charge $+Q$ is placed at the centre of a dashed circle. Work done in taking another charge $+q$ from $A$ to $B$ is $W_1$ and from $B$ to $C$ is $W_2$. Which one of the following is correct: $W_1>W_2, W_1=W_2$ and $W_1<W_2$?

A uniform electric field $E$ exists between two charged plates as shown in figure. What would be the work done in moving a charge $\text{'}q\text{'}$ along the closed rectangle path $ABCDA$?

What is the work done in moving a $2$ microcoulomb point charge from corner $A$ to corner $B$ of a square $ABCD$ shown in figure below, when a $10 \mu c$ charge exists at the centre of the square?

Two protons $A$ and $B$ are placed between two parallel plates having a potential difference $V$, as shown in figure below. Will these protons experience equal or unequal force?

A point charge $q$ is placed at $O$, as shown in Figure below. Is $V_A-V_B$ positive, negative or zero, if q is a (i) positive, (ii) negative charge?