A car generator turns at 590 rpm when the engine is idling. Its 370-turn, 7.20 by 9.20 cm rectangular coil rotates in an adjustable magnetic field so that it can produce sufficient voltage even at low rpms. What is the field strength needed to produce a 29.0 V peak emf? (Discuss how this required field strength compares to those available in permanent and electromagnets.)

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To find the field strength needed to produce a 290 V peak emf we can use the formula for the induced ... View the full answer