Created by StemPy LabA square frame moves at a steady speed and is wholly inside a wide region of uniform field, far from the edges of the region. Which statement is right?
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← A loop of wire is a square of side 6.5 cm, and its resistance is 0.047 Ω. It is carried at 2.2 m/s towards a region of uniform field 0.52 T, at right angles to the loop. What is the current in the loop while it is moving in through the edge of the region?Two smooth upright rails, 0.22 m apart, end in a capacitor of 3.0 F and have no resistor. A field of 0.55 T is at right angles to the plane of the rails. A bar of mass 30 g slides down across them, from rest. What is the acceleration of the bar? Take g = 9.8 m/s². →
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