question_answer

The force on a conductor of length\[l\]placed in a magnetic field of magnitude B and carrying a current I is given by (\[\theta \]is the angle, the conductor makes with the direction of B):

A)  \[F=I\,l\,B\sin \theta \]

B)         \[F={{I}^{2}}\,l\,{{B}^{2}}\sin \theta \] 

C)  \[F=I\,l\,B\cos \theta \]

D)                         \[F=\frac{{{I}^{2}}l}{B}\sin \theta \]

E)  \[F=\frac{{{I}^{2}}l}{B}\cos \theta \]