21_Chapter 20 HomeworkCH20 Induced Voltages and Inductance

21_Chapter 20 HomeworkCH20 Induced Voltages and Inductance...

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Induced Voltages and Inductance 195 20.56 (a) () 2 23 11 50.0 H 50.0 10 A 6.25 10 J 22 L PE LI == × 1 0 (b) ( )( ) 2 73 012 3 4 10 T m A 50.0 0 . 2 5 0 m Nk N 2.00 10 2.00 mm II d π µ ππ ×⋅ × = A F 20.57 (a) To move the bar at uniform speed, the magnitude of the applied force must equal that of the magnetic force retarding the motion of the bar. Therefore, . The magnitude of the induced current is app FB I = A ( ) ( ) B tBA
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