Task id13087
In a uniform magnetic field with induction B, two metal rods closed at the top are located vertically at a distance L. The plane in which the rods are located is perpendicular to the direction of the magnetic field induction. Along the rods, without friction and without breaking contact, a bridge ab of mass m slides down at a constant speed v (Fig. 129). Determine the electrical resistance R of the jumper ab, if the resistance of the rest of the system can be neglected. B = 10-2 tl, v = 1 m/sec, m = 1 g, L = 50 cm.
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