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A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.98 V and a current of 2.1 A are induced in the coil. The wire is then re-formed into a single-turn square coil, which is used in the same magnetic field (again perpendicular to the plane of the coil and with a magnitude changing at the same rate). What (a) emf and (b) current are induced in the square coil?

  • PHYSICS 2 -

    It would be the same B, but different area. Calculate the differences in area of the circle and a square with the same perimeter.

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