A non-conducting ring of radius 0.5 m carries a total charge of...

A non-conducting ring of radius 0.5 m carries a total charge of $1.11 \times 10^{-10} \mathrm{C}$ distributed non-uniformly on its circumference producing on its circumference on electric field $\mathbf{E}$, everywhere in space. The value of the line integral $\int_{l=\infty}^{l=0}(-\mathbf{E} \cdot \mathbf{d l})$ $(l=0$ being centre of ring) in volts is