Question

A current-carrying wire where current is directed towards right is located in a uniform magnetic field directed into the page as shown in the figure. The magnetic force on the wire is:

• A. zero
• B. directed out of the page
• C. directed to the bottom of the page
• D. directed to the left
• E. directed to the top of the page

Answer 1

The correct option is E directed to the top of the page

The force acting on a current carrying wire placed in a magnetic field is given by
$\overrightarrow{F}=I\overrightarrow{L}\times \overrightarrow{B}$

Thus for $\overrightarrow{L}$ towards the right, $\overrightarrow{B}$ into the plane, the force acts towards the top of the page.