Electrostatics Question 763
Question: 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 E everywhere in space. The value of the integral $ \int\limits _{\ell =\infty }^{\ell =0}{-E.dl} $ ($ \ell =0 $ being center of the ring) in volts is
Options:
A) +2
B) -1
C) -2
D) zero
Show Answer
Answer:
Correct Answer: A
Solution:
[a] $ K=\frac{V _{0}}{V}-1 $
$ =\frac{kq}{r}=-0 $
$ \frac{9\times 10^{9}\times 1.11\times {{10}^{-10}}}{0.5} $
$ \approx 2V $
