Solution: Consider a circular loop of radius R in the presence of a uniform magnetic field. Which of the following statements is true? A) Doubling the magnetic field would result in the same change in flux as doubling the radius would. B) Doubling the angle between the magnetic field and the surface will double the magnetic flux. C) Changing the angle between the axis of the coil and the field from 90o to some θ angle would result in the same change in flux as doubling the area of the coil. D) Halving the radius of the coil halves the magnetic flux through the coil. E) None of the above are true.

Problem

Consider a circular loop of radius R in the presence of a uniform magnetic field. Which of the following statements is true?

A) Doubling the magnetic field would result in the same change in flux as doubling the radius would.

B) Doubling the angle between the magnetic field and the surface will double the magnetic flux.

C) Changing the angle between the axis of the coil and the field from 90o to some θ angle would result in the same change in flux as doubling the area of the coil.

D) Halving the radius of the coil halves the magnetic flux through the coil.

E) None of the above are true.