Suppose this page is perpendicular to a uniform magnetic field and the magnetic flux through it is 5.0 Wb.If the page is turned by 30°around an edge the flux through it will be:
A)2.5 Wb
B)4.3 Wb
C)5.0 Wb
D)5.8 Wb
E)10 Wb

Question

Quizplus · Accepted Answer

When the page is turned by an angle θ, the new flux passing through it can be found using the formula Φ′ = Φcosθ, where Φ is the initial flux and θ is the angle rotated. Plugging in the values, we get Φ′ = 5.0 × cos(30°) = 4.33 Wb. So the best choice is B, 4.3 Wb.

Suppose This Page Is Perpendicular to a Uniform Magnetic Field