The potential at a point x ( measured in `mu` m) due to some charges situated on the x-axis is given by
`V(x)=20//(x^2-4) vol t`
A. `(5)/(3) (V)/(mum)` and in the positive x-direction.
B. `(10)/(9) (V)/(mum)` and in the negative x-direction.
C. `(10)/(9) (V)/(mum)` and in the positive x-direction.
D. `(5)/(3) (V)/(mum)` and in the negative x-direction.
