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Introductory Physics Homework Help
Current of Coil, and Emf of Coil.
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[QUOTE="rcmango, post: 1617711, member: 59385"] [h2]Homework Statement [/h2] 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 0.91 V and a current of 3.2 A are induced in the coil. The wire is the 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 emf and current are induced in the square coil? [h2]Homework Equations[/h2] L = 2*pi*r, A = L/4*pi, A = L^2/16 [h2]The Attempt at a Solution[/h2] Okay i know the lengths are the same for the circular coil and the square coil. Oh and the form has changed. So A1/A2 = (L^2/4*pi) / (L^2/16) = 16/4*pi and for the current i could use I2 = V2/R and I'm not sure but i think R = V1/I1 ? I have a lot of help so far, not sure what the final answer is, anyone? [/QUOTE]
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Introductory Physics Homework Help
Current of Coil, and Emf of Coil.
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