What is the period of revolution (T) of charge)q1 if a particle of mass m carrying a charge)q1 starts moving around a fixed charge q2 along a circular path of radius r?
a) T = 2π√(m/r³)
b) T = 2π√(r/m³)
c) T = 2π√(r/m)
d) T = 2π√(m³/r)