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Write the expression for Lorentz magneti...

Write the expression for Lorentz magnetic force on a particle of charges 'q' moving with velocity `overset(rightarrow)v` in a magnetic field `overset(rightarrow)B`.

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Lorentz magnetic force on a moving charged particle in the magnetic field is
`vecF=q(vecvxxvecB)`
This force is acting perpendicular to the plane containing `vecv` and `vecB`, and is directed as given by Right Hand rule. Since work done,
`W=vecF.vecs=Fscostheta`,
where `vecs` is displacement of charged particle in magnetic field. Here, angle `theta=90^@`, so
`W=Fscos90^@=0`.
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