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Conducting ball of radius a is surrounde...

Conducting ball of radius a is surrounded by a layer of dielectric having inner radius a and outer radius b. The dielectric constant is K. The conducting ball is given a charge Q. Write the magnitude of electric field and electric potential at the outer surface of the dielectric.

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The correct Answer is:
`E=(1)/(4pi in_(0))(Q)/(b^(2));V=(1)/(4pi in_(0))(Q)/(b)`
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