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Explain mobility of conductor and derive equation of mobility. |
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Answer» Solution :`rArr ` Conductivity of material due to mobile charge carrier insider the conductor. `rArr` In metals electrons are mobile charge carrier. `rArr`In electrolyte positive and negative ION are charge carrier. `rArr`In ionized GAS electron and positive ion are charge carrier. `rArr` In SEMICONDUCTOR electron and hole are charge carrier. `rArr`Mobility : Drift velocity per unit electric field is called mobility . `therefore mu = (|v_(d)|)/(E) ` mks unit `(ms^(-1))/(Vm^(-1)) = m^(2) V^(-1) s^(-1)` CGS unit = `cm^(2) V^(-1) S^(-1)` Dimensional formula = `|M^(-1) L^(0) T^(2) A^(1)|` `(((m)/(s)))/((N)/(C)) = (m)/(s) xx (C)/(N)` `(m)/(s) (C)/([kg ""(m)/(s^(2))]) = (CS)/(kg)` = C.s. `kg^(-1)` |
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