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in this diagram, the shaded regions are spherical conductors.

What's the potential at A=B?

Ignoring the outer sphere, it should be kQ/R.

When you add the outer sphere, potential at C=D=0 and electric field between B and C is kQ/x^2

so i integrated (kQ/x^2) dx with interval [2R, R] and got -kQ/2r

Is that right? I think the potential at A=B should be positive though, and the answer says so too :(

Thanks!

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# Homework Help: Electric potential, spherical conductor

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