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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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When a particle having charge +q, moves with a velocity v, perpendicular to the direction of magnetic field `vec(B)`, Lorentz force is given by
`f = qvB`
  The direction of Lorentz force can be calculated on the basis of Fleming.s left hand rule. If charged particle is moving in a magnetic field making an angle `theta` , force F is given by :
`F = qvB sin theta`
or `vecF = q (vecv xx vecB)`
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