A ring of charge with radius 1.5 cm and a charge of100nC has the electric field along the primary axis of the ring asE=kQx/(R^2+x^2)^3/2
1. find electric field 2.25 cm from the center of thering along the primary axis
2. what force would a charge of -5nC experience at this point
3. what point charge would you have to place at x=-5cm to make theelectric field zero at this location?
