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A student attempts to make a simple generator by

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Unformatted text preview: A student attempts to make a simple generator by passing a single loop of wire between the poles of a horseshoe magnet with a 2.5 × 10 −2 T field. The area of the loop is 7.54 × 10 −3 m 2 and is moved perpendicular to the magnetic field lines. In what time interval will the student have to move the loop out of the magnetic field in order to induce an emf of 1.5 V? 1.26x10-4 s 5) A rectangular coil 0.055 m by 0.085 m is positioned so that its cross-sectional area is perpendicular to the direction of a magnetic field, B . If the coil has 75 turns and a total resistance of 8.7 Ω and the field decreases at a rate of 3.0 T/s, what is the magnitude of the induced current in the coil? 0.12A 1) A flexible loop of conducting wire has a radius of 0.12 m and is perpendicular to a uniform magnetic field with a strength of 0.15 T . The loop is grasped at opposite ends and stretched until it closes to an area of 3 × 10 −3 m 2 . If it takes 0.20 s to close the loop, find the magnitude of the average emf induced in the loop during this time. 0.032V ALSO what is the direction of the induced current? See figure below… 2) A 52-turn coil with an area of 5.5 × 10 −3 m 2 is dropped from a position where B = 0.00 T to a new = 0....
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