Q.
Outer cylinder of the coaxial nonconductor of radius '$b$' is given a positive potential $V$ relative to the inner cylinder of radius ' $a$ ' as shown in the figure (charge distribution is uniform). A charge $q$ (mass $= m$ ) is set free with negligible velocity at the surface of the inner cylinder. Find the velocity (in $m / s$ ), when it hits the outer cylinder. [consider $V =10, q =-20,\, m =1$ all in S.I. units]
Electric Charges and Fields
Solution: