If a circular loop of wire of radius 19.7 cm is located in a region where the spatially uniform magnetic field perpendicular to the plane of the loop is changing at a rate of +2.0 ✕ 10−3 T/s, find the value of the induced EMF in this loop due to this changing magnetic field.

Magnitude of induced emf will be

Explanation:

We have given radius of the circular loop r = 19.7 cm = 0.197 m

So area of the circular loop

It is given that magnetic field is changing as

Emf induced in the circular loop is equal to

So emf induced will be equal to

So magnitude of induced emf will be

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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