33:) solving..
A rectangular loop PQRS made from a uniform wire has length a, width b and mass m. It is free to rotate about the arm PQ, which remains hinged along a horizontal line taken as the y-axis. Take the vertically upward direction as the z-axis. A uniform magnetic field B=(3i+4k)B0 exists in the region. The loop is held in the x-y plane and a current I is passed through it. The loop is now released and is found to stay in the horizontal position.
What is the direction of current I in PQ?
Find the magnetic force on the arm RS?
Find the expression for I in terms of B0, a, b and m
JEE-2002
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UP 0 DOWN 0 0 10
10 Answers
33:-)
It was a subjective problem naa in IIT 2002
how many marks?
1357Yeah it was subjective.
that time there were 12 questions in mains each of 5 marks
