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Secure https://session.masteringphysics.com/myct/itemView?assignmentProblemID-80834341 Hw 16 Magnetic Flux and induced EMF in a Coil « previous| 6 of 11 | next Express your answer numerically, in webers, to at least three significant figures. ± Magnetic Flux and Induced EMF in a Coil Hints In a physics laboratory experiment, a coil with 250 tuns enclosing an area of 14.0 cm2 is rotated during the time interval 3.90×10-2 s from a position in which its plane is perpendicular to Earth's magnetic field to one in which its plane is parallel to the field. The magnitude of Earth's magnetic field at the lab location is 6.50×10-5 T |initial- Wb Submit My Answers Give Up Incorrect; Try Again; 4 attempts remaining Part B what is the magnitude of the magnetic flux final through the coil after it is rotated? Express your answer numerically, in webers, to at least three significant figures. Hints Submit My Answers Give Up Correct Part C What is the magnitude of the a verage emf induced in the coil? Express your answer numerically (in volts) to at least three significant figures. Hints average induced emf Mv Answers Give Up

Explanation / Answer

N = number of turns in the coil = 250

A = Area of cross section of coil = 14 cm2 = .0014 m2

Initial magnetic flux(phi) = BAcos(theta) [where theta is angle between plane of coil and magnetic field = 0 degree]

A) so initial magnetci flux = 6.5 x 10-5 x 0.0014 = 9.1 x 10-8 Wb

B) avg induced emf = (9.1x10-8 - 0)/(3.9x10-2) = 2.33x10-6 V

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