Lorentz Force Law
The Lorentz Force Law can be used to describe the
effects of a charged particle moving in a constant magnetic field.
The simplest form of this law is given by the scalar equation
F = QvB
B is magnetic field (vector)
NOTE: this case is for v and B perpendicular to each
other otherwise use F = QvB(sin(x)) where x is the angle between
v and B. When v and B are perpendicular x=90 deg. so sin(x)=1.
The right hand rule comes into play here to figure
out which way the force is acting.
Right Hand Rule
For a POSITIVLY charged particle moving (velocity
v) in a magnetic field (field B) the direction of the resultant
force (force F) can be found by:
The force will ALWAYS be perpendicular to the PLANE of the vectors v and B, no matter what the angle between v and B is. Just pretend the following picture is of your right hand:
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