Created by StemPy LabA generator feeds a lamp. The lamp is changed for one that draws more current, and the speed is kept the same. What must the driver do?
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← The emf of a generator is e = 36 sin(75π t) volt, with t in seconds. What is the emf at t = 1/225 s?Two upright metal rails are 0.14 m apart and are joined at the top, so the loop they form has a resistance of 0.038 Ω. A crossbar of mass 12 g is released and slides down them. A horizontal field of 0.57 T is at right angles to the plane of the rails. What steady speed does the crossbar reach? Take g = 9.8 m/s². →
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