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An electron experiences a force moving in a magnetic field and bends its path. Its kinetic...

An electron experiences a force moving in a magnetic field and bends its path. Its kinetic energy

Question 11 options:

decreases.

becomes potential energy.

increases.

stays the same.
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Answer #1

Force experienced by moving charge Q under magnetic field perpendicular to the velocity

F= q (Cross product of v and B)

and magnetic force will be perpendicular to both magnetic field and velocity .

Centripetal force will act on bending the moving charge so,

mv²/r = qvB

v= qBr/m

charge will flow the radius of curvature 'r' but magnetic force will not do any work on charge because it always act perpendicular to the motion of charge.

So, energy will remain conserved and kinetic energy of charge will remain same and as well as velocity.

So, (d) kinetic energy stage the same.

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