Magnetic FluxHardQuestion 20200
Question
A circular coil of radius 5 cm, 20 turns, lies in the plane of a uniform field B = 0.1 T. Magnetic flux through the coil is:
- Aπ×10⁻³ Wb per turn
- B2π×10⁻³ Wb total
- C2π×10⁻³ per turn
- D0Correct
Correct answer
0
Explanation
If the coil lies in the plane of B, then B is parallel to the plane — meaning B is perpendicular to the area vector. Flux = BA cosθ = BA cos90° = 0.