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Current Loop Is a Magnet?

A beam of ele...

Question

A beam of electrons passes undeflected through
mutually perpendicular electric and magnetic
fields. It the electric field is switched off, and the
same magnetic field is maintained, the electrons
move:

A

along a straight line

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B

in an elliptical orbit

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C

in a circular orbit

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D

along a parabolic path

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Solution

The correct option is C in a circular orbit
In magnetic afield a charged particle moves in a circular orbit.

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