A ring-shaped conductor with radius a = 2.30cm has a total positive charge Q = 0.130nC uniformly distributed around it.
A) What is the magnitude of the electric field at point P, which is on the positive x-axis at x=45.0 cm?
B) What is the direction of the field at point p?
A particle with a charge of ? 3.00?C is placed at the point P described in part A. What is the magnitude of the force exerted by the particle on the ring?
What is the direction of the force exerted by the particle