Question

A charge is moving across a junction, then"​

Answer 1

Explanation:

When motion of charge is taking place across a junction, then momentum of charge is not conserved. Because when a charge (i.e., electron) approaches a junction, in addition to a uniform electric field E that it normally faces (which keeps the drift velocity vd (fixed).

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Answer 2

Answer:

When motion of charge is taking place across a junction, then momentum of charge is not conserved. Because when a charge (i.e., electron) approaches a junction, in addition to a uniform electric field E  that it normally faces (which keeps the drift velocity vd (fixed). there are accumulation of charges on the surface of wires at the junction which also produces electric field, resulting the variation in the direction of momentum of charge.

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