Ian G.

asked • 04/26/17# Potential Energy between charges

A positive charge of 3 nC is placed at the origin and a positive charge of 6.75 nC is

placed on the x-axis 5 cm. A positive test charge of 2 nC is placed on the x-axis a

distance d, between these two charges.

placed on the x-axis 5 cm. A positive test charge of 2 nC is placed on the x-axis a

distance d, between these two charges.

When the test charge is placed at 2cm what is the force and the potential energy at this point?

The Force is 0N i am 100% sure.

I have tried to work out the potential energy but my answer differs from the one provided. My attempt is

U = ∑ kQ

_{1}Q_{2}/rDoing the sum of these I got my answer to be 6.74x10

^{-6 }JThe answer provided is 2.74x10

^{-6}J
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