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Point charges create equipotential lines that are circular around the charge (in the plane of the paper). What is the potential energy, in nJ, of a 1 nC charge located 1.99 m from a 2 nC charge ?

Respuesta :

The potential energy between two charges can be written as:

[tex]U_e=\frac{kq_1q_2}{r}[/tex]

In our case, it'll be equal to:

[tex]U_e=\frac{9*10^9*1*10^{-9}*2*10^{-9}}{1.99}=9.045nJ[/tex]

Then, our answer is PE=9.045nJ

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