The diagram below illustrates an isolated metal sphere carrying charge W in a medium whose permittivity is so. The magnitude of the electric field intensity at P can be expressed as

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A. Q²/(4πεor²)
B. Q/(4πεor²)
C. Q/(4πεor)
D. Q²/(4πεor²)
E. Q/(4πεor)²

Correct Answer:

Option B – Q/(4πεor²)

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