A 420-Turn Circular Coil with an Area of 0

question 14

Multiple Choice

A 420-turn circular coil with an area of 0.0650 m² is mounted on a rotating frame,which turns at a rate of 22.3 rad/s in the presence of a 0.0550-T uniform magnetic field that is perpendicular to the axis of rotation.What is the instantaneous emf in the coil at the moment that the normal to its plane is perpendicular to the field?

• A)33.5 V
• B)zero
• C)0.0673 V
• D)747 V
• E)1.50 V

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