Home
Class 12
PHYSICS
Assertion : If a current is flowing thro...

Assertion : If a current is flowing through a conducting wire of non-uniform cross-section, drift speed and resistance both will increase at a section where cross-sectional area is less.
Reason : Current density at such sections is more where cross-sectional area is less.

A

Both Assertion and Reason are correct and Reason Is the correct explanation of the Assertion

B

Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion

C

Assertion Is correct but Reason Is Incorrect

D

Assertion Is Incorrect but Reason Is correct

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

A stready current i is flowing through a conductor of uniform cross-section. Any segment of the conductor has

Assertion : Current I is flowing through a cylindrical wire of non-uniform cross-section as shown. Section of wire near A will be more heated compared to the section near B. Reason : Current density near A is more.

A wire of non-uniform cross-section is carrying a steady current. Along the wire

Current is flowing through a wire of non-uniform cross section. Cross section of wire at A is les than the cross section of wire at B. Then match the following

A steady current flows in a metallic conductor of non-uniform cross-section i.e., i : constant. A ne constant.

A current is flowing through a conducting hollow pipe whose area of cross-section is shown in the fig. The value of magnetic induction will be zero at-

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

The resistance will be least in a wire with length, cross-section area respectively,