the magnetic field perpendicular to a circular wire loop 9.0 cm in diameter is changed from 0.48 t to -0.69 t in 200 ms , where means the field points away from an observer and - toward the observer.

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10-12-2022
Physics

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the magnetic field perpendicular to a circular wire loop 9.0 cm in diameter is changed from 0.48 t to -0.69 t in 200 ms , where means the field points away from an observer and - toward the observer.

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jaspreetsharma jaspreetsharma · Answer 1 · 2022-12-16T05:16:14+01:00

The induced emf is equal to 0.025v. If the outward magnetic flux rises, the current must go counterclockwise. When the flux coupling with a conductor or coil changes, an electromotive force, or EMF.

There are two approaches to get this change in flux: by statically or dynamically inducing emf across a certain area. For instance, the magnetic flux density is lower if fewer magnetic lines cover a large region of cross section. Knowing the magnetic flux also enables us to make an educated guess about the magnitude of the magnetic field in a particular area. The surface integral of the normal component of the magnetic field is used to define the magnetic flux across a surface (B)

e = Pi*r^2(B2 - B1)/t

e = pi*81/4*0.50/130 *10

e = 0.025v

current must be clock wise

Learn more about magnetic flux here

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