In a physics laboratory experiment, a coil with 220 turns enclosing an area of 1

Question

In a physics laboratory experiment, a coil with 220 turns enclosing an area of 12.2 cm^2 is rotated during the time interval 3.50 times10^-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 6.20 times 10^-5 T. ANSWER 1: Deduction: -3% |phi_initial| = 1.66 middot 10^-5 Wb ANSWER 2: Deduction: -3% |phi_initial| = 7.56 middot 10^-5 Wb What is the magnitude of the magnetic flux (phi_initial) through the coil before it is rotated? Express your answer numerically, in webers, to at least three significant figures. What is the magnitude of the magnetic flux phi_final through the coil after it is rotated? Express your answer numerically, in webers, to at least three significant figures. What is the magnitude of the average emf induced in the coil? Express your answer numerically (in volts) to at least three significant figures.

Explanation / Answer

Magnetic flux =NB.A=6.2×10^-5 ×12.2×10^-4×220=16.64×10^-6weber

Iduced emf=- change in flux /time

=16.64×10^-6/3.5×10^-2=4.75×10^-4V

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