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A currrent of 5A is passing through a metallic wire of cross sectional area 14xx 10^(-6) m^2 . If the density of the charge carries in the wire is 5 xx 10^(26)//m^3, find the drift speed of the electrons (charge carries). |
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Answer» Solution :`I= 5 A , A = 14xx10^(-6) m^2` density of electron `=5 XX 10^(26)//m^3` CHARGE of electron `e= 1.6xx10^(-19) C`. DRIFT speed `v_d= i/("neA")` `=(5)/(5XX10^(26) xx 1.6 xx 10^(-19( xx 14 xx 10^(-6))` `=(10^(-1))/(1.6xx 14) = 4.46xx10^(-3) ` m/s |
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