The armature of an ac generator is a circular coil with 50 turns and radius 6.70 cm. When the armature rotates at 350.0 rev/min, the amplitude of the emf in the coil is 29.0 V. What is the magnitude of the magnetic field (assumed to be uniform)?

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Q: in R app 길이 |의 도체 막대가 마찰이 없는 두 레일 위를 그림과 같이 오른쪽으로 움직이고 있다. 크기가 030 T 인 균일한 자기장이 지면으로 들어가고 있다. 이다.…

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