A current passes through a wire of non-uniform cross section. Which of the following quantities are independent of the cross-section?

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

free-electron density

drift speed

current density

the charge crossing in a given time interval

answer is A, D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

The current trough a conductor is independent of the area of cross-section. It will be same through out the length of the conductor.

The charge crossing in a given time interval is nothing but current and it is independent of area of cross-section.

Current density and Drift speed are related with area of cross section and are inversely proportional to it.

Free-electron density is again independent of the area.

JEE

NEET

Foundation JEE

Foundation NEET

CBSE