The electric field $\overrightarrow{E}$ is constant in both magnitude and direction. Consider a path of length d at an angle $\theta =60°$ with respect to field lines as shown in figure. The potential difference between points $1$ and $2$ is:-

Which statement is true?

(i) A ring of radius $R$ carries a uniformly distributed charge $+Q$. A point charge $-q$ is placed on the axis of the ring at a distance $2R$ from its centre and released. The particle executes simple harmonic motion along the axis of the ring.

(ii) Electrons move from a region of higher potential to that of lower potential

The variation of potential with distance x from a fixed point is shown in figure. The electric field at

List $\mathrm{I}$ gives certain situations in which electric field is represented by electric lines of forces in $x-y$ plane. List $\mathrm{II}$ gives corresponding representation of equipotential lines in $x-y$ plane. Match the figures in List $\mathrm{I}$ with the figures in List $\mathrm{II}$ and indicate your answer.

In the electric field of charge $Q$, another charge is carried from $A$ to $B$, $A$ to $C,A$ to $D$ and $A$ to $E$, then work done will be: