Problem

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

1.11 \times 10^{-10} \text{ C}

distributed non-uniformly on its circumference producing an electric field

E

everywhere in space. The value of the integral

\textstyle \boxed{\int_{l=\infty}^{l=0} -\mathbf{E} \cdot d\mathbf{l}}

(

l = 0

being centre of the ring) in volt is (JEE 1997) (a) + 2 (b) - 1 (c) - 2 (d) zero