A circular loop (radius of 20 cm) is in a uniform magnetic field of 0.15 T. What angle(s) between the normal to the plane of the loop and the field would result in a flux with a magnitude of ?

The angle other than 90 degrees would result in magnetic flux of non zero magnitude.

Explanation:

The magnetic flux through a given closed area is equal to .

    Where is the magnitude of magnetic flux through loop .

                is the area vector of the given loop .

      We know that = ,

 Where is the angle made by magnetic field with area vector.

   Area vector of a closed loop is always normal to the plane of the loop .

So from above equation we can deduce that

      is the magnitude of magnetic flux which is non zero when not equal to 90 degrees.

answer: b.

explanation:

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