Question Detail

PHY 102 Electromagnetic Induction 1 Objective Question

Question

When considering magnetic flux in a non-uniform magnetic field or over a non-flat surface, how is the total magnetic flux calculated?
Options
A By simply multiplying the average magnetic field by the total area.
B By performing an integral of B · dA over the surface.
Correct Answer
C By using the formula Φ<sub>B</sub> = B · A directly.
D Magnetic flux cannot be calculated in such cases.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 7 states: 'When B is not constant, or the surface is not flat, one must do an integral.' It then provides the formula ΦB = ∫ B · dA.

Hint

Look at the 'Magnetic Flux' section, specifically the part discussing non-constant fields or non-flat surfaces.

Question Info