I am stuck can\'t get correct answer please help In a physics laboratory experim

Question

I am stuck can't get correct answer please help In a physics laboratory experiment, a coil with 210 turns enclosing an area of 12 cm^2 is rotated In 0.050 s from a position where its plane is perpendicular to the earth's magnetic field to one where its plane is parallel to the field What average emf is induced if the earth's magnetic field is 6.0 times 10^-5 T? A motor with a brush-and-commutator arrangement, has a circular coil with radius 1.9 cm and 105 turns of wire. The magnetic field has magnitude 0.060 T, and the coil rotates at 330 rev/min. What Is the maximum emf Induced in the COM? What is the average back emf?

Explanation / Answer

change in flux / timne = Voltage

E = 210x12x10^-4 6x10^-5 /0.05

E = 0.0003024 V

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