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In a physics laboratory experiment, a coil with 250 turns enclosing an area of 11.8cm2 is rotated...

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Physics

In a physicslaboratory experiment, a coil with 250 turns enclosing an area of11.8cm2 is rotated in a time interval of 3.00

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3.7 Ratings (667 Votes)

Given

magnitude of magnetic field   B = 7*10^ -5 T

area of the coil A = 11.8 cm^2

number of turns of the coil   N = 250

   magnetic flux through the coil

                 ? = B A N cos?

   initially the plane of the coil is perpendicular to the earth magnetic field

                   ?   = 0

total magnetic flux through the coil after it is rotated

                   ? = BAN cos 0

                       = 7*10^ -5 * 11.8 *10^ -4 * 250  

                        = 2.06*10^ -5 Wb

                       

average induced emf in the coil

                 ?    = d ? /d t

                       = 2.06*10^ -5 Wb / / 3*10^ -2

                       = 0.687*10^ -3   V
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