Question

part II (PROBLEMS): Show all given information, starting equations, and all work to solve each problem. Cirdle your final answers. 13) A flat coil having 40 turns, each one of cross-sectional area 120 cm2, is oriented with its plane perpendicular to a uniform magnetic field. The field varies steadily from 0.00 T to 1.20 T in 20.0 ms A. What emf is induced in the coil during this time? eme oum2: 0,00六 2OT B. If the coil's resistance is 3.0 ohms, what is the current in the coild during this time? 14) A airplane having a metal surface and a wingspan of 25.0 m flies horizontally at 200. m/s where the earth's magnetic field is vertical with magnitude 45.0 μΤ. (a) What emf is induced across the wings? (b) What wingspan would the plane need to produce 1.00-V emf across its wings? (e The plane now reverses direction. Does the polarity of the wingtip emf change? That is, if the left wing wa positive before, does it now become negative?

Answer 1

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