Home
Class 12
PHYSICS
Statement I: The drift velocity of free ...

Statement I: The drift velocity of free electrons is `v_d` when a current l passes through a copper wire. The drift velocity is halved when the same current passes through another copper wire of double the diameter.
Statement II: For the same current, the drift velocity of free electrons in a metal wire is inversely proportional to the area of cross section of the wire.

A

Statement I is true,statement II is true,statement II is a correct explantion for statement I

B

Statement I is true,statement II is truel Statement II is not a correct explanation for statement I.

C

Statement I is true,statement II is false

D

Statement I is false, statement II is true.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    CHHAYA PUBLICATION|Exercise ENTRANCE CORNER(MULTIPLE CORRECT ANSWERS TYPE)|5 Videos
  • CURRENT ELECTRICITY

    CHHAYA PUBLICATION|Exercise ENTRANCE CORNER(COMPREHENSION TYPE)|8 Videos
  • CURRENT ELECTRICITY

    CHHAYA PUBLICATION|Exercise EXERCISE ( HOT NUMERICAL PROBLEMS)|5 Videos
  • COMMUNICATION STSTEM

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|28 Videos
  • DIFFRACTION AND POLARISATION OF LIGHT

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|27 Videos

Similar Questions

Explore conceptually related problems

Two copper wires have a ratio of 1:4 between their diameters. IF the same current passes through both of them, the drift velocity of the electrons will be in the ratio of

Velocity of electric current is much more___ than the drift velocity of free electrons in a metallic conductor [Fill in the blanks].

When a current of 1 A flows through a copper wire of cross sectional area 1mm^2 the drift velocity of free electrons becomes v, What will be the drift velocity of free electrons when the same current flows through a copper wire of cross sectional area 2mm^2 ?

Explain the term drift velocity of electrons in a conductor.Hence obtain the expression for the current through a conductor in terms of drift velocity.

It 1 A current is passed through a metallic wire, how many electrons pass through a point in the wire per second.

Statement I : A long straight conductor attracts iron filings when a current is passed through it. Statement II : A magnetic field is developed around a current carrying conductor.

An electric cell of e.m.f E is connected across a copper wire of diameter d and length l. The drift velocity of electrons in the wire is v_(d) . If the length of the wire is changed to 2l, the new drift velocity of electrons in the copper wire will be

Copper has one conduction electron per atom. Its density is 8.89g//cm^3 and Its atomic mass is 63.54.g//mol . If a copper wire of diameter 1.0 mm carries a current 2.0 A. The drift speed of the electrons in the wire is