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A 6.30cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.740T pointing up. During the course of 0.130s, the field is changed to one of 0.310 T pointing down. What is the average induced emf in the coil?

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This solution provides a detailed, step by step solution illustrating how to calculate the final magnetic flux, the time taken for the change and the use of Faraday's law to derive the final calculation in volts. All calculations are shown.

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Cross sectional area of coil A = pi*d^2/4 = 3.1416*0.063^2/4 m^2 = 0.003117 m^2
<br>If we take pointing up ...

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