A steady current is set up in a metallic wire of a non-uniform cross-section. How is the rate of flow K of electrons related to the area of cross-section A?
A. K is independent of A
B. K ∝ A
C. K ∝ A-1
D. K ∝ A2
Answer:C
A steady current is set up in a metallic wire of a non-uniform cross-section. How is the rate of flow K of electrons related to the area of cross-section A?
A. K is independent of A B. K ∝ A C. K ∝ A-1 D. K ∝ A2