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Question

A large hollow metallic sphere has a positive charge of $35.4 μ C$ at its centre. Find how much electric flux will emanate from the sphere ?

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Solution

Electric flux $= ϕ = \frac{q}{ϵ_{0}} = \frac{35.4 \times 10^{- 6}}{8.85 \times 10^{- 12}} = 4 \times 10^{6} N m^{2} / C$

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