A wire has a non-uniform cross-section as shown in figure. A steady cu

1.	A wire has a non-uniform cross-section as shown in figure. A steady current flows through it. The driftspeed of electrons at point P and Q is Vp and Vq
Answer» ANSWER: Explanation: we know formula , i = neaved where n is number of electrons per unit volume , e is the CHARGE of an ELECTRON , a is the cross section area of wire , i is current through wire and vd is the drift SPEED of electrons . e.g., therefore drift speed is inversely proportional to cross section area. e.g., if we increase the cross section area , drift speed will decrease. here, from A to B cross section area increases. hence, drift speed decreases from A to B. Hence, decreases is correct. Note : Please try to post full question.But I have ATTACHED this question picture Have A look please

A wire has a non-uniform cross-section as shown in figure. A steady current flows through it. The driftspeed of electrons at point P and Q is Vp and Vq

Answer»

Explanation:

we know formula ,

i = neaved

where n is number of electrons per unit volume , e is the CHARGE of an ELECTRON , a is the cross section area of wire , i is current through wire and vd is the drift SPEED of electrons .

e.g.,

therefore drift speed is inversely proportional to cross section area. e.g., if we increase the cross section area , drift speed will decrease.

here, from A to B cross section area increases.

hence, drift speed decreases from A to B.

Hence, decreases is correct.

Note : Please try to post full question.But I have ATTACHED this question picture Have A look please

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