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A square metal wire loop of side \( 10 \mathrm{~cm} \) and resistance \( 1 \Omega \) is moved with a constant velocity \( v_{0} \) in a uniform magnetic field of induction \( B=2 \mathrm{~Wb} / \mathrm{m}^{2} \) as shown in the figure. The magnetic field lines are perpendicular to the plane of the loop
P (directed into the paper). The loop is connected to a network

W) of resistors each of value \( 3 \Omega \).
What should be the speed of the loop so as to have a steady current of \( 1 \mathrm{~mA} \) in the loop? Give the direction of current in the loop.
\( (1983,6 \mathrm{M}) \)
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