Three is a uniform spherically symmetric surface charge density at a distance `R_(0)` from the
Channel: Doubtnut
Date: 2020-01-03

Three is a uniform spherically symmetric surface charge density at a distance `R_(0)` from the origin . The charge distribution is intially at rest and starts expanding because of mutual repulsion , the figure that repeesents best the speed V (r(t)) of the distribution as a function of its intantanradius R(t) is :