Physics Assignment Help With Current in a Conductor

12.4 Current in a Conductor

Consider a conductor of uniform cross-sectional area S. If n is the number of free electrons per unit volume, the charge per unit volume is ne. If vd is the drift velocity, electrons move a distance vd in one second. Therefore, the volume moved in one second is vdS. Thus, the current,

I =

J = or vd =

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