Home
Class 12
PHYSICS
An electron moving towards the east ente...

An electron moving towards the east enters a magnetic field directed towards the north. The force on the electron will be directed

A

`(2e^(2))/( 4 pe_(0)r^(2)SW`

B

`(e^(2))/(4p ie_(0)r^(2)) NE`

C

`(2e^(2))/(4 p e_(0)r^(2)) Ne`

D

`(e^(2))/(4 pi e_(0)r^(2)) SW`

Text Solution

Verified by Experts

The correct Answer is:
A
The charge on alpha particle is 2e. The electron is attracted and electric forces are central forces and act along the line joining the charged particles.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTRIC CHARGES AND FIELDS

    NARAYNA|Exercise EXERCISE -3|50 Videos

  • DUAL NATURE

    NARAYNA|Exercise LEVEL-II (H.W)|17 Videos

  • ELECTRO MAGNETIC INDUCTION

    NARAYNA|Exercise Level-II (H.W)|23 Videos

Similar Questions

Explore conceptually related problems

The motion of an electron in presence of a magnetic field is depicted in the figure. Force acting on the electron will be directed

An electron moving with a uniform velocity along the positive x-direction enters a magnetic field directed along the positive y-directed along the force on the electron is directed along :

Knowledge Check

  • A charge + Q is moving upwards vertically. It enters a magnetic field directed to the north. The force on the charge will be towards

    A
    North
    B
    South
    C
    East
    D
    West

  • A particle is moving towards east enters in a magnetic field directed towards north and deflected in vertically downward direction. The charged particle is

    A
    an electron
    B
    a proton
    C
    an alpha particle
    D
    a neutron

  • An electron moving with a uniform velocity along the positive x -direction enters a magnetic field directed along the positive y -direction. The force on the electron is directed along

    A
    Positive `y-` direction
    B
    Negative `y`-direction
    C
    Positive `z`- direction
    D
    Negative `z`-direction

    • Similar Questions

    Explore conceptually related problems

    An electron moving with a uniform velocity along the positive x-direction enters a magnetic field directed along the positive y-directed along the force on the electron is directed along :

    A proton moving horizontally downward enters in a magnetic field pointing towards north In which direction proton will be deflect ?

    A proton moving horizontally downward enters in a magnetic field pointing towards north In which direction proton will be deflect ?

    An electron enters a region that contains a magnetic field directed into the page as shown. The velocity vector of the electron makes an angle of 30^(@) with the +y axis. What is the direction of the magnetic force on the electron when it enters the field ?

    A vertical wire carrying a current in the upward direction is placed in horizontal magnetic field directed towards north. The wire will experience a force directed towards

    Home
    Profile