Question Detail
Question
Which of the following expressions equals the magnetic flux?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Magnetic flux is defined as Φ = B·A = BAcosθ, where θ is the angle between the field B and the normal to the area A.
Hint
Magnetic flux is the dot product of B and the area vector — recall the cosine form of a dot product.