= Two long parallel guide wires of zero resistance, separated by a distance d=1m, are connected to a potential difference AV 3V. A bar of mass m=5kg and resistance R = 30 makes contact with these wires, and can slide along them without friction, always remaining perpendicular to the wires. An externally applied uniform magnetic field B=5T is perpendicular to the plane of the bar and the two wires. Find the velocity of the bar right after 2 seconds, assuming that the bar has an initial velocity of 1.2 m/s at time t=0.
= Two long parallel guide wires of zero resistance, separated by a distance d=1m, are connected to a potential difference AV 3V. A bar of mass m=5kg and resistance R = 30 makes contact with these wires, and can slide along them without friction, always remaining perpendicular to the wires. An externally applied uniform magnetic field B=5T is perpendicular to the plane of the bar and the two wires. Find the velocity of the bar right after 2 seconds, assuming that the bar has an initial velocity of 1.2 m/s at time t=0.
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Transcribed Image Text:Two long parallel guide wires of zero resistance, separated by a distance_d=1m,
are connected to a potential difference AV = 3V. A bar of mass m=5kg_and
resistance R = 3N makes contact with these wires, and can slide along them without
friction, always remaining perpendicular to the wires. An externally applied uniform
magnetic field B=5T is perpendicular to the plane of the bar and the two wires. Find
the velocity of the bar right after 2 seconds, assuming that the bar has an initial
velocity of 1.2 m/s at time t=0.
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