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Q: A steady current flows in a metallic conductor of non uniform cross section. The quantities constant along the length of the conductor is /are ---------
Final Answer : Current only.
1) Current : Yes it is constant.
Reason:
If it is not constant, then there will be accumulation of charge in the cross section of wire.
That is not possible in static current condition of metallic conductor.
2) Drift Velocity:Nopsy, It is not constant.
I = neAv(d)
Since, I is constant
=> V(d) is inversely proportional to Area of cross section.
V(d) changes on changing the cross section.
3) Electric Field:
Since, Electric field is proportional to v(d) , then Electric field also changes with cross section.
Hence, Only current is constant.
Q: A steady current flows in a metallic conductor of non uniform cross section. The quantities constant along the length of the conductor is /are ---------
Final Answer : Current only.
1) Current : Yes it is constant.
Reason:
If it is not constant, then there will be accumulation of charge in the cross section of wire.
That is not possible in static current condition of metallic conductor.
2) Drift Velocity:Nopsy, It is not constant.
I = neAv(d)
Since, I is constant
=> V(d) is inversely proportional to Area of cross section.
V(d) changes on changing the cross section.
3) Electric Field:
Since, Electric field is proportional to v(d) , then Electric field also changes with cross section.
Hence, Only current is constant.
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