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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A coil replaced with another coil that has loops 2 times the initial loops and the rate nof change of magnetic flux is constant. Determine the ratio of initial and final induced emf
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- ΔΦ. Vndeed=-N At ДФ %3D induced What will increase the Voltage produced by a moving magnet? OIncreasing the area of the loop under a constant B field. Increasing the number of loops in the coil. O Moving the magnet more rapidly O All of the abovearrow_forwardIn a well-designed transformer with an iron core, the secondary coil has twice as many turns as the primary coil. Which one of the followi statements concerning this transformer is true? OA This is a step-down transformer because the current in the secondary coil is less than that in the primary coll. OB The effect of the iron core is to reduce the magnetic field passing through the coils. C The induced emf generated in the secondary coil is twice as large as that generated in the primary coil. 9:44 PM O D. The flux that passes through each turn of the primary coil is twice the flux that passes through the secondary coil.arrow_forwardThe switch in the circuit shown is closed at time t = 0. a) At what rate is energy being dissipated asheat in the resistor after an elapsed time equal to the time constant of the circuit? b) Calculate the rate at whichenergy is being stored in the inductor at this time. c) What is the total energy stored in the inductor at this time?d) How long a time does it take the current to reach 70 percent of its maximum value?arrow_forward
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