A  coil is wrapped with 300 turns of wire on the perimeter of a circular frame (radius = 8.0 cm).  Each turn has the same area, equal to that of the frame. A uniform magnetic field is turned on  perpendicular to the plane of the coil. This field changes at a constant rate from 20 to 80 mT in a  time of 20 ms. What is the magnitude of the induced emf in the coil at the instant the magnetic  field has a magnitude of 50 mT?

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A: Answer is given below:  Explanation:Question 1:Answer:

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A: The given values are, N=65.0A=7.9 m2∆B=12.9 T-4.2 T=8.7 T∆t=0.15 s

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A: Area of the loop ResistanceInitial magnetic FieldFinal magnetic fieldTime interval

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Q: A single loop of steel wire, lying flat in a plane, has an area of 7.20 cm² and a resistance of 2.10…

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A:

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Q: What is the induced current (in mA) in the loop of wire over this time?

A:

Q: A single loop of copper wire, lying flat in a plane, has an area of 7.40 cm2 and a resistance of…

A: Area of the loop A=7.40 cm2 ResistanceR=1.80 Ω Initial magnetic FieldBi=0.500 T Final magnetic…

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A: