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Fig shows a closed surface surrounding s...

Fig shows a closed surface surrounding some electric charges (a) what is the net electric flux through the surface? (b) Is the electric flux directed inward or outward from the surface ?

Text Solution

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(a) Here, total charge inside the surface :
`q = -6.7 muC + 3.2 muC = -3.5 muC`
As `phi_(E) = (q)/(in_(0)) = (-3.5xx10^(-6))/(8.85xx10^(-12))`
`= -3.95xx10^(5) Nm^(2) C^(-1)`
(b) As `phi_(e)` is negative, it is directed Inwards.
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