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An 80-turn coil that has a radius equal to 5cm and a resistance equal to 30...

An 80-turn coil that has a radius equal to 5cm and a resistance equal to 30 ohms sits in a region that has a magnetic field normal to the plane of the coil. At what rate must the magnitude of the magnetic field change to produce a current of 4A in the coil?

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Answer #1

Induced EMF E- - It 0-0 id(BANASO) dt E =-NA ab where E=IR where ET - at dB - E IR NA - N(T9) 4x30 50 (3-14 (5 xio 2) db = 19

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