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Current Electricity — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity1 Mark
Question
Define the term 'Mobility' of charge carriers in a conductor. Write its S.I. unit.
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Answer

Magnitude of the drift velocity of charge carrier per unit Electric field is called mobility.

Alternate Answer

$\mu = \frac{|\text{V}_{d}|}{\text{E}}\text{ or } \frac{\text{e}\tau}{\text{m}}$

SI unit = m2 / (volt second) or ms-1N-1C.

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