Semi-Circular Current Magnetic Field
Example 4.6: Magnetic Field of Bent Wire
This simulation demonstrates the magnetic field at the center of a semi-circular current-carrying wire.
Current (I):
12 A
Radius (r):
2.0 cm
Magnetic field (B):
0 T
Key Concepts
(a) Straight segments: dl × r = 0 → No contribution
(b) Semi-circle: B = ½ × (μ₀I/2R) = 1.9 × 10⁻⁴ T (into plane)
(c) Opposite bend: Same magnitude, opposite direction
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Right-Hand Rule
Curl fingers in current direction, thumb points in field direction (into plane for scenario a, out of plane for scenario b).
