HLO ❤ Figure (30-Q2a ) shows an imaginary cube of edge L/2 . A uniformly charged rod of length L moves towards left at a small but constant speed v. at t = 0 , the left end just touches the centre of the face of the cube opposite it. which of the graphs shown in figure ( 30-Q2b ) represents the flux of the electric field through the cube as the rod goes through it?
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