A steady current is passing through a conductor of non-uniform cross-section . The net quantity of charge crossing any cross-section per second is

Options

A. independent of area of cross-section
B. directly proportional to the length of conductor
C. directly proportional to the area of cross-section
D. inversely proportional to the length of conductor

Answer

A

Explanation

We know that in steady state, net charge crossing any cross-section per second remains constant throughout the conductor of non-uniform cross-section because charge entering at one section is equal to the charge leaving at any other section.