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[" Two wires each of radius of cross sec...

[" Two wires each of radius of cross section r but of "],[" different materials are connected together end to "],[" end (in series).If the densities of charge carriers in "],[" the two wires are in the ratio "1:4" ,the drift velocity "],[" of electrons in the two wires will be in the ratio: "],[[" (1) "1:2," (2) "2:1],[" (3) "4:1," (4) "1:4]]

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