A ring-shaped conductor with radius a = 2.50 cm has a total positive charge Q =

Question

A ring-shaped conductor with radius a = 2.50 cm has a total positive charge Q = 0.128 cN 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 = 36.0 cm ?

E= ?? nC

B.What is the direction of the electric field at point P?
1)+x-direction
or
2)-x-direction

C.A particle with a charge of -2.60 uC is placed at the point P described in part A. What is the magnitude of the force exerted by the particle on the ring?

F= ?? N

D.What is the direction of the force exerted by the particle on the ring?
1) +x-direction
or
2) -x-direction

Explanation / Answer

E=KQ1Q2 / (x2 + Y2)^3/2

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