Q. A circular loop of radius $R$, carrying current $I$ lies in $xy -$plane with its centre at origin. The total magnetic flux through $xy$-plane is
A) Directly proportional or $R$
B) Directly proportional or $I$
C) Inversely proportional to $I$
D) Zero
Explanation
(d) Whenever the flux of magnetic field through the area bounded by a closed conducting loop changes, an emf is produced in the loop in this case the magnetic flux $ie.,$number of magnetic lines of force entering and leaving the loop is same hence magnetic flux is zero.
[image:6_image66.emf]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.