A particle of mass and charge enters a magnetic field perpendicularly with a velocity . The radius of the circular path described by it will be
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Force,
A charged particle moves through a magnetic field in a direction perpendicular to it. Then the
velocity remains unchanged
speed of the particle remains unchanged
direction of the particle remains unchanged
acceleration remains unchanged
Magnetic force acts perpendicular to the velocity. Hence speed remains constant.
A charged particle of mass and charge travels on a circular path of radius that is perpendicular to a magnetic field . The time taken by the particle to complete one revolution is
Equating magnetic force to centripetal force,
Time to complete one revolution,
A proton and an alpha particle of the same velocity enter in a uniform magnetic field which is acting perpendicular to their direction of motion. The ratio of the circular paths described by the alpha particle and proton is:
As
An electron with energy moves at right angle to the earth's magnetic field of . The frequency of revolution of the electron will be
(Take mass of electron )
A proton and an -particle enter a uniform magnetic field perpendicularly with the same speed. If proton takes second to make 5 revolutions, then the time period for the -particle would be
Time taken by proton to make one revolution
.
A charged particle enters into a magnetic field with a velocity vector making an angle of with respect to the direction of magnetic field. The path of the particle is
circular
helical
elliptical
straight line
If an electron and a proton having same momenta enter perpendicular to a magnetic field, then
curved path of electron and proton will be same (ignoring the sense of revolution)
they will move undeflected
curved path of electron is more curved than that of the proton
path of proton is more curved
is same for both.
If an electron describes half a revolution in a circle of radius in a magnetic field , the energy
acquired by it is
zero
Bev
Since magnetic force is always perpendicular to the velocity of electron, so it can only change the direction of velocity of electron, but it (the magnetic force) cannot accelerate or deaccelerate the electron.
A electron is circulating in a plane at right angles to a uniform field at a magnetic induction gauss). The orbital radius of the electron is
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