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A circular coil with a diameter of 25.0 cm and 158 turns rotates about a vertical...

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Physics

A circular coil with a diameter of 25.0 cm and 158 turns rotatesabout a vertical axis with an angular speed of 1230 rpm . The onlymagnetic field in this system is that of the Earth. At the locationof the coil, the horizontal component of the magnetic field is3.81×10−5T, and the vertical component is 2.85×10−5T.
Find the maximum emf induced in the coil.
Answer in mV

Answer & Explanation Solved by verified expert
3.9 Ratings (621 Votes)

Emax = ωNBA

                Given angular speed   ω = 1230 rpm = 1230 * 2π/60

                                                       = 128.8 rad/s

                  No. of turns               N   =   158

                   Magnetic field          B   =   3.81 * 10-5    T

                   Area of coil   A = π * r2    =    3.14 * 0.1252

                                                               

Emax = 0.038 V

     
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