Magnetic Flux (Φ = BA cos θ)
Enter your known values, leave one input blank, and solves for the missing one. Try different units for next level excitement!
Learning zone
Flux counts field lines through a loop, and the cosine keeps score of orientation: face-on (θ = 0) captures everything, edge-on (θ = 90°) captures nothing. A 0.5 T field through a 10 cm × 10 cm loop face-on threads 5 mWb. Flux matters because changing it is what generates voltage — every generator on Earth is a machine for varying BA cos θ, usually by spinning the θ.
Magnetic Flux (Φ = BA cos θ)
Where
- = Magnetic flux
- = Magnetic field
- = Loop area
- = Tilt angle
Missing one of these? Work it out first, then come back
- Magnetic flux — Faraday's Law of Induction
- Magnetic field — Motional EMF (ε = BLv), Magnetic Field of a Solenoid
- Loop area — Pressure (P = F/A), Sound Intensity (I = P/A)
- Tilt angle — Torque with a Lever Arm (τ = rF sin θ), Angular Velocity (ω = θ/t)