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5. -12 points My An isolated conductor of arbitrary shape has a net charge of +1.1 × 10-5 C. Inside the conductor is a cavity within which is a point charge q = +2.8 × 10-6 C. (a) What is the charge on the cavity wall? (b) What is the charge on the outer surface of the conductor? Additional Materials

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Answer #1

Given,

Q = 1.1 x 10^-5 C ; q = 2.8 x 10^-6 C

a)The charge on cavity wall will be:

q(wall) = -2.8 x 10^-6 C

b)The charge on outer surface will be:

Qo = 1.1 x 10^-5 - (-2.8 x 10^-6) = 1.38 x 10^-5 C

Hence, Qo = 1.38 x 10^-5 C

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