JEE Main 2020 — Magnetic Properties Of Matter Question with Solution
From: JEE Main 2020 (Online) 4th September Morning Slot
Question
A small bar magnet placed with its axis
at 30o with an external field of 0.06 T
experiences a torque of 0.018 Nm. The
minimum work required to rotate it from its
stable to unstable equilibrium position is :
at 30o with an external field of 0.06 T
experiences a torque of 0.018 Nm. The
minimum work required to rotate it from its
stable to unstable equilibrium position is :
Choose an option
Show full solutionCorrect option: C
Correct answer
C7.2 10-2 J
Step-by-step explanation
Torque on a bar magnet :
Here, = 30º, I = 0.018 N-m, B = 0.06 T
Here, = 30º, I = 0.018 N-m, B = 0.06 T
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