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ls the motion of a charge across junction momentumconserving ? Why or why not ? |
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Answer» SOLUTION :When ELECTRON moves normal to uniform electric field E, it has definite drift VELOCITY. Drift velocity is given by, `v_(d) = (Ee tau)/(m) ` Also due to charge accumulate momentarily at JUNCTION it produce additional electric field which affect drift velocity. Hence, once charge leaves junction momentum is not conserved. |
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