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An electron moves with a constant speed ...

An electron moves with a constant speed v along a circle of radius r. Its magnetic moment will be (e = eletronic charge)

A

`evr`

B

`1/2 evr`

C

`pi r^2 ev`

D

`2 pi r ev`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • An electron moves with a constant speed v along a circle of radius r . Its magnetic moment will be ( e is the electron's charge)

    A
    `evr`
    B
    `(1)/(2)evr`
    C
    `pir^(2)ev`
    D
    `2pirev`

  • When a body moves with a constant speed along a circle

    A
    No work is done on it
    B
    No acceleration is produced in the body
    C
    No force acts on the body
    D
    Its velocity remains constant

  • A particle moves with constant speed v along a circular path of radius r and completes the circle in time T. The acceleration of the particle is

    A
    `2pi v//T`
    B
    `2pi r//T`
    C
    `2pi r^(2)//T`
    D
    `2pi v^(2)//T`

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