Question

What is \[\theta\] in \[\Phi_B=BA\cos\theta\]?

Options

• Angle between \[\vec B\] and \[\vec A\]

• Angle between the magnetic field and the plane of the surface

• Area of the surface

• Magnetic flux linkage of the coil

Answer 1

\[\theta\] is the angle between the magnetic field and the area vector. The factor \[\cos\theta\] accounts for their relative orientation.