Question: A conductive wire, which is shaped in a 'U' without being connected to any power supply or battery, sits flat on a table. An external magnetic field of strength 0.75 Tesla is directed down into the table, such that the magnetic field is perpendicular to the plane of the wire. A 32 cm long metal bar rolls along the wire at constant velocity of 0.45 m/s toward the top of the 'U' (toward the open part of the 'U' not the curved part). If the wire has a resistance of 0.0125 Q, what the magnitude and direction of the induced current in the wire?
Question: A conductive wire, which is shaped in a 'U' without being connected to any power supply or battery, sits flat on a table. An external magnetic field of strength 0.75 Tesla is directed down into the table, such that the magnetic field is perpendicular to the plane of the wire. A 32 cm long metal bar rolls along the wire at constant velocity of 0.45 m/s toward the top of the 'U' (toward the open part of the 'U' not the curved part). If the wire has a resistance of 0.0125 Q, what the magnitude and direction of the induced current in the wire?
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Transcribed Image Text:Question: A conductive wire, which is shaped in a 'U' without being connected to any power supply or
battery, sits flat on a table. An external magnetic field of strength 0.75 Tesla is directed down into the
table, such that the magnetic field is perpendicular to the plane of the wire. A 32 cm long metal bar rolls
along the wire at constant velocity of 0.45 m/s toward the top of the 'U' (toward the open part of the U'
not the curved part). If the wire has a resistance of 0.0125 Q, what the magnitude and direction of the
induced current in the wire?
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