Wire Is Wound on a Square Frame,30 Cm by 30

question 30

Multiple Choice

Wire is wound on a square frame,30 cm by 30 cm,to form a coil of 7 turns.The frame is mounted on a horizontal shaft through its center (perpendicular to the plane of the diagram) ,as shown in the figure.The coil is in clockwise rotation,with a period of 0.060 s.A uniform,horizontal,magnetic field of magnitude 0.40 T is present.At a given instant,the plane of the coil forms a 60° angle with the horizontal,as shown.At that instant,what is the magnitude of the emf induced in the coil?

• A) 13 V
• B) 23 V
• C) 2.1 V
• D) 3.6 V
• E) 26 V

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