Home
Class 12
PHYSICS
When an electron beam is moving in a mag...

When an electron beam is moving in a magnetic field, then the work done is equal to the -

A

charge of electron

B

magnetic field

C

product of electronic charge and the magnetic field

D

0

Text Solution

Verified by Experts

The correct Answer is:
D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MAGNETISM -1

    MOTION|Exercise Exercise - 2|30 Videos
  • MAGNETISM -1

    MOTION|Exercise Exercise - 3 SECTION -A|56 Videos
  • MAGNETISM -1

    MOTION|Exercise Exercise - 1 SECTION -C,D :- Magnetic force on charge and current carrying wire|27 Videos
  • MAGNETISM

    MOTION|Exercise EXERCISE-4 (LEVEL-II)|40 Videos
  • MATTER WAVE

    MOTION|Exercise EXERCISE 3 (SECTION B)|7 Videos

Similar Questions

Explore conceptually related problems

A protom (or an electron) is moving in a uniform magnetic field. What is the path of the proton (or an electron) if it enters (i) parallel to the field, (ii) perpendicular to the field, and (iii) at an angle to the field?

If an electron is moving with velocity v produces a magnetic field vecB , then

Knowledge Check

  • when an electron moves through a magnetic field , its speed will

    A
    decrease
    B
    increase
    C
    remain the same
    D
    increase first and then decrease
  • When an electronl beam passes through and electric field they gain kinetic energy. If the same electron beam passes through a magnetic field then their

    A
    energy and momentum both ramain unchanged
    B
    potential energy increases
    C
    momentum increases
    D
    kinetic energy increases
  • A magnet of dipole moment m is aligned in equilibrium position in a magnetic field of intensity B. The work done to rotate it through an angle theta in the magnetic field is

    A
    `mBsintheta`
    B
    `mBcostheta`
    C
    `mB(1-costheta)`
    D
    `mB(1-sintheta)`
  • Similar Questions

    Explore conceptually related problems

    When electron beam passes through an electric field,they gain kinetic energy. If the same beam passes through magnetic field, then

    An electron moves in Bohr's orbit. The magnetic field at the centre is proportional to

    An electron is moving in electron field and magnetic field it will gain energy from

    A magnet of magnetic moment M is rotated through 360^(@) in a magnetic field H, the work done will be

    When an electron moving with constant speed enters in a magnetic field at 60^(@) then its de- broglie wave length.