Question

A oarticle of charge q mass m is moving with velocity it is subjected to a uniform magnetic field directed oeroendicula to its velocity show that it descibes circular oath write exoression for radius

Answer 1

A particle of mass m and charge Q moving with velocity V enters the region of uniform magnetic field at right angle to the direction of its motion. How does its kinetic energy get affected?

Kinetic energy of charged particle will never change what ever b the direction of projection .

As F=q (v×B)

Which means angle between F and v hence between F and d is always 90.

Now as work is dot product of F and d so always zero.

So no work is done on charged particles by magnetic force so it's K.E .never changes so speed never changes.

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