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

MATHEMATICS · Single correct · ISC · Mathematics · Physics · Magnetic Effects of Current and Magnetism

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

(b)

F = B I L \sin\theta

(c)

F = B I L

(d)

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