Q. A current carrying wire $LN$ is bent in the form shown below. If wire carries a current of $10\ A$ and it is placed in a magnetic field of $5T$ which acts perpendicular to the paper outward then it will experience a force
A) Zero
B) 5 $N$
C) 30 $N$
D) 20 $N$
Explanation
(b) The given wire can be replaced by a straight wire as shown below
Hence force experienced by the wire
$F = Bil = 5 \times 10 \times 0.1 = 5N$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.