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26
81. A small circular wire loop of radius a is located
at the center of a much larger circular wire loop
of radius b as shown above. The larger loop
carries an alternating current I= I, cos wt,
where lo and w are constants. The magnetic
field generated by the current in thè large loop
induces in the small loop an emf that is
approximately equal to which of the following?
(Either use mks units and let Ho be the
permeability of free space, or use Gaussian units
and let Ho be 4T/ c².)
(A) (T.
(gle)o sin at
) (T) w sin ot
(P) ()
w cos wt
3.
(C)
cos wt
(E) (피aa) 응 sin ar
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Transcribed Image Text:26 81. A small circular wire loop of radius a is located at the center of a much larger circular wire loop of radius b as shown above. The larger loop carries an alternating current I= I, cos wt, where lo and w are constants. The magnetic field generated by the current in thè large loop induces in the small loop an emf that is approximately equal to which of the following? (Either use mks units and let Ho be the permeability of free space, or use Gaussian units and let Ho be 4T/ c².) (A) (T. (gle)o sin at ) (T) w sin ot (P) () w cos wt 3. (C) cos wt (E) (피aa) 응 sin ar
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