Magnetic force formulas

anon4895

Full Member
Jun 8, 2012
43
1
    When do you use the magnetic force formula F=qvB vs. F=ILB?


    When you have a charge moving you use F = qvB, when you have a current running through a wire you would use F = ILB

    Keep in mind though those formulas normally involve the cross products of vectors. The formulas as you've written them only give you the magnitude of the force when the velocity (or current in the second formula) is perpendicular to the magnetic field.
     
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