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Electric charge Q having mass M moves on...

Electric charge Q having mass M moves on a circular path of radius R with velocity `vecv`, perpendicular to uniform magnetic field B. When a particle completes one revolution, work done by the field is _______

A

QvBR

B

`QvB(2piR)`

C

zero

D

`(Mv^(2))/R*2piR`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • An alpha particle of mass m moves on a circular path of radius r in a plane inside and normal to uniform magnetic field B. The time taken by this particle to complete one revolution is ________

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  • An electron of mass m and charge q is travelling with a speed v along a circular path of radius r at right angles to a uniform of magnetic field B. If speed of the electron is doubled and the magnetic field is halved, then resulting path would have a radius of ____ .

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  • If radius of circular paths followed by one proton and one alpha -particle, in the plane, perpendicular to uniform magnetic field, are equal then ratio of their momenta is _____ .

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