1.

A non-conducting ring of radius \[0.5\,m\] carries a total charge of \[1.11\times {{10}^{-10}}C\] distributed non-uniformly on its circumference producing an electric field \[\vec{E}\] everywhere in space. The value of the line integral \[\int_{l=\infty }^{l=0}{\,-\overrightarrow{E}.\overrightarrow{dl}}\,(l=0\] being centre of the ring) in volt is                                                                       [IIT 1997 Cancelled]

A.                    + 2
B.            ? 1
C.                    ? 2                                    
D.            Zero
Answer» B.            ? 1


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