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Twelve infinite long wire of uniform linear charge density `(lambda)` are passing along the twelve edges of a cube. Find electric flux through any face of cube. , A. `((lambdal)/(2epsilon_(0)))`B. `((lambdal)/(epsilon_(0)))`C. `((lambdal)/(3epsilon_(0)))`D. `((3lambdal)/(epsilon_(0)))` |
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Answer» `phi_(cube)=`flux due to single wire from whole cube `phi_(cube)=(lambda l)/(8 epsilon_(0))` similarly four wires out of twelve will have same contribution and eight will have zero. `phi_(face)=(lambda l)/(8 epsilon_(0))xx4=(lambda l)/(2epsilon_(0))` |
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