alleryMagnetic flux through a surface is:
AB × A only
BB · A (vector dot product, B × area projected)
CB + A
DB / A
Answer & Solution
Correct answer: B. B · A (vector dot product, B × area projected)
Φ_B = ∫ B · dA = BA cos theta for uniform field, where theta is angle between B and surface normal.
**SI unit:** weber (Wb) = T m².
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