Two charges of magnitudes -2Q and +Q are...

Two charges of magnitudes -2Q and +Q are located at points (a, 0) and (4a, 0) respectively. What is the electric flux due to these charges through a sphere of radius '3a' with its centre at the origin ?

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The correct Answer is:

Only `-2Omega` is inside Gaussian surface `phi=(-2 Omega)/e_0`

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