Mathematics

Problem

Which of the following expressions gives the magnitude of the magnetic force

F

acting on a straight conductor of length

L

carrying current

I

in a uniform magnetic field of magnitude

B

, making an angle

\theta

with the field? a)

F = B I L \cos\theta

F = B I L \sin\theta

F = B I L

F = \dfrac{B I L}{\sin\theta}