alleryMagnetic flux through a flat loop in a uniform field B is
AΦ_B = B · A cos θ, where θ is the angle between B and the area normal
BΦ_B = B · A sin θ
CΦ_B = B + A
DΦ_B = B / A
Answer & Solution
Correct answer: A. Φ_B = B · A cos θ, where θ is the angle between B and the area normal
We have Φ_B = B · A.
So Φ_B = BA cos θ.
Maximum when normal is parallel to B (θ = 0), zero when perpendicular (θ = π/2).
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