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Physics
Physics
Problem
Which one of the following expressions gives the magnitude of the magnetic force acting on a charge
q
q
q
moving with speed
v
v
v
at an angle
θ
\theta
θ
to a uniform magnetic field of magnitude
B
B
B
? a)
q
v
B
q v B
q
v
B
b)
q
v
B
cos
θ
q v B \cos \theta
q
v
B
cos
θ
c)
q
v
B
sin
θ
q v B \sin \theta
q
v
B
sin
θ
d)
q
v
B
tan
θ
q v B \tan \theta
q
v
B
tan
θ
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