f radius r ! 24.0 cm, centered at O. A straight wire OP
Chapter , Problem 100(choose chapter or problem)
f radius r ! 24.0 cm, centered at O. A straight wire OP can be rotated about O and makes sliding contact with the arc at P. Another straight wire OQ completes the conducting loop. The three wires have cross-sectional area 1.20 mm2 and resistivity 1.70 10'8 " (m, and the apparatus lies in a uniform magnetic field of magnitude B ! 0.150 T directed out of the figure. Wire OP begins from rest at angle u ! 0 and has constant angular acceleration of 12 rad/s2 . As functions of u (in rad), find (a) the loops resistance and (b) the magnetic flux through the loop. (c) For what u is the induced current maximum and (d) what is that maximum?
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