I keep getting “Magnetic flux” questions wrong in Magnetism & Electromagnetic Induction. What's the trap?
ignoring the angle between the field and the loop's normal.
The usual trap: ignoring the angle between the field and the loop's normal. How to avoid it: flux is maximum when the field is perpendicular to the loop's plane. Go back to the definition — Φ = B·A·cosθ — the amount of field passing through a loop.
Key point
Magnetic flux
Common mistake
ignoring the angle between the field and the loop's normal.
Memory tip
flux is maximum when the field is perpendicular to the loop's plane.
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