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A charge q is placed at the centre of a cube of side l. What is the electric flux passing through two opposite faces of the cube? |
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Answer» By symmetry, the flux through each of the six faces of the cube will be same when charge q is placed at its centre. \(\therefore\varphi E=\cfrac16.\cfrac{Q}{\varepsilon_0}\) Thus, electric flux passing through two opposite faces of the cube = 2.\(\cfrac16.\cfrac{q}{\varepsilon_0}\) |
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