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Image for To practice problem-solving strategy 25.1 electromagnetic induction A 1000 of wire of radius a =40 mm has a
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By the Faraday's Law, we have

$$ V=-\frac{d \Phi_{B}}{d t} $$

If the Magnetic field decrease feaster the time derivate of the flux is, in magnitude, greater and the electromotive force in the coil is increased. This makes that the charges in the coil move faster, because the electrostatic force that move them is greater, and so the current would increase.

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