Home
Class 12
PHYSICS
Consider a conductor of variable cross s...

Consider a conductor of variable cross section in which current is flowing from cross section 1 to 2. Then

A

current passing through both the cross sections in the same

B

current through 1 is less then that through 2

C

drift velocity of electrons at 1 is less then that at 2

D

drift velocity is same at both the cross sections

Text Solution

Verified by Experts

The correct Answer is:
A, C
As the cross section are in series, so the current in them will
be the same. From `I = "ne"Av_(d),` we have `v_(d) prop 1//A.` As one cross
section is more, hence the drift velocity is less.
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CURRENT AND CIRCUIT

    CENGAGE PHYSICS|Exercise Comprehension|35 Videos

  • ELECTRIC CURRENT AND CIRCUIT

    CENGAGE PHYSICS|Exercise Interger|8 Videos

  • ELECTRIC CURRENT AND CIRCUIT

    CENGAGE PHYSICS|Exercise Single Correct|72 Videos

  • ELECTRIC CURRENT & CIRCUITS

    CENGAGE PHYSICS|Exercise Kirchhoff s law and simple circuits|15 Videos

  • ELECTRIC FLUX AND GAUSS LAW

    CENGAGE PHYSICS|Exercise MCQ s|38 Videos

Similar Questions

Explore conceptually related problems

A wire of radius R having uniform cross section in which steady current l is flowing. Then

A portion of a tube is shown in the figure. Fluid is flowing from cross-section area A_(1) to A_(2) . The two cross-sections are at distance 'l' from each other. The velocity of the fluid at section A_(2) is sqrt((gl)/(2)) . If the pressures at A_(1) & A_(2) are same, then the angle made by the tube with the horizontal will be:

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 through the conductor of variable cross-sectional area. Now select the correct options.

If one ampere current flows through a conductor, the number of electrons flowing across the cross section of the conductor in 2 second it "_________" .

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.

Two cylindrical conductors with equal cross-sections and different resistivites rho_(1) and rho_(2) are point end to end. Find the charge at the boundary of the conduction if a current I flows from conductor 1 to conductor 2