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20_Chapter 20 HomeworkCH20 Induced Voltages and Inductance

20_Chapter 20 HomeworkCH20 Induced Voltages and Inductance...

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194 CHAPTER 20 (c) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )( ) 1 2 0 0 7 4 2 3 -2 -2 4 10 T m A 12 500 2.71 A 1.00 10 m 1.52 10 V 2 7.00 10 m 2.00 10 s 2 B n I A B A N I A t t t t µ µ π ∆Φ = ⋅ ∆ × × = = × × A = = × (d) ( ) ( ) ( ) 3 820 1.52 10 V 0.051 9 A 51.9 mA 24.0 coil B coil coil coil N t R R I ε × ∆Φ = = = = = 20.54 (a) Doubling the number of turns doubles the amplitude but does not alter the period. (b) Doubling the angular velocity doubles the amplitude and also cuts the period in half. (c) Doubling the angular velocity while reducing the number of turns to one half the
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