t Magnetic Flux and Induced EMF in a Coil In a physics laboratory experiment, a

Question

t Magnetic Flux and Induced EMF in a Coil In a physics laboratory experiment, a coil with 190 turns enclosing an area 11.4 cm is rotated during the time interval 3.10x10 2s 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 5.10x10 5 T Part A What is the total magnitude of the magnetic flux 4initial) through the coil before it is rotated? Express your answer numerically, in webers, to at least three significant figures. I inulall 1.10466 10 Submit Hints NyAnswers Give Up Review Part Incorrect; Try Again Part B What is the magnitude of the total magnetic flux 4nnal through the coil after it is rotated? Express your answer numerically, in webers, to at least three significant figures. final Submit Hints My Answers Give Up Review Part Part C

Explanation / Answer

Part C

N = 190 turns

Area : A = 11.4 cm² = 0.00114 m²
changes in the magnetic field : B = (5.10*10^-5 - 0) T = 5.10*10^-5 Tesla
t = 0.031 seconds

average emf induced in the coil :
=> E = -N A (B/t)
=> E = -(190) (0.00114) (0.000051 / 0.031)
=> E = 3.5*10-4 volt

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