7 . A loop of a wire has the shape shown in the drawing. The top part of the wir

Question

7. A loop of a wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r = 0.20 m. The normal to the plane of the loop is parallel to a constant magnetic field of magnitude 0.62 T. What is the change in the magnetic flux that passes through the loop when, starting with the position shown in the drawing, the semicircle is rotated through half a revolution?   Wb

7. A loop of a wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r = 0.20 m. The normal to the plane of the loop is parallel to a constant magnetic field of magnitude 0.62 T. What is the change in the magnetic flux that passes through the loop when, starting with the position shown in the drawing, the semicircle is rotated through half a revolution? Wb

Explanation / Answer

Here ,

Change in flux = Change in Area * magnetic field

CHange in flux = pi*r^2 * B

Change in Flux = - 3.141 * .2^2 * 0.62

Change in Flux = - 0.0779 Wb

the change in the magnetic flux that passes through the loop is - 0.0779 Wb

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