Two identical circular loops, P and Q each of radius r and carrying currents I and 2I respectively
Channel: Doubtnut
Date: 2020-08-02

Two identical circular loops, P and Q each of radius r and carrying currents I and 2I respectively are lying in parallel planes such that they have a common axis. Their centres are distance `2r` apart. The direction of current in both the loops is clockwise as seen from O which is equidistant from both the loops. Find the magnitude of the net magnetic field at point O.  img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/PR_XII_V01_C03_S01_456_Q01.png" width="80%"