Why does the aluminium ring move away when a magnet approaches? The answer lies in electromagnetic induction and Lenz’s Law:
Magnetic flux in the ring changes.
An induced e.m.f. is produced.
Induced current flows in the ring.
According to Lenz’s Law, the current opposes the change in flux.
A repulsive force is produced → the ring moves away.
Exam tip: even though the marking scheme lists 5 points, the maximum score is 3 marks.
AHA! Ring repels, law revealed. Not by sight, but by INSIGHT!
#AHAPhysicsMoments #CikguLimCY #PhysicsInEverydayLife
#100DaysOfPhysics #SeeWithPhysicsEyes #PhysicsWithInsight
No comments:
Post a Comment
What's Your AHA! Moment? Any Questions? Share Your Insights Here!