A cylindrical metal rod of length L and cross sectional area S is joined to an EMF source The drift speed of electrons in the

Question

A cylindrical metal rod of length L and cross sectional area S is joined to an EMF source The drift speed of electrons in the rod is v If this rod is replaced by another rod of length 2L and cross sectional area 25 then drift speed of electrons in the new rod will be 1 VIN 2 3 2v 2 v 4 4v

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