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OpenStudy (anonymous):
a metal bar of length L rotates at an angular velocity, about a vertical axis through its center while in a vertically directed (upwards, along axis) constant magnetic field B. the direction of rotation is clockwise looking along the vertical axis. (a) what is the polarity of the rotating end? plus or minus? (b) derive a formula for the emf induced between the end of the bar and the axis of rotation
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