INVESTIGATION MODE
A — Wire B vs r
B — B vs Current I
C — Loop B vs Axis x
D — Force F vs Current I
E — Two Wires vs Spacing
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I (selected)
+20 A
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EQUATION LAB
Straight Wire — B = μ₀I/2πr
Current Loop — B = μ₀IR²/2(R²+x²)^1.5
Magnetic Force — F = BIL sinθ
Ampere's Law — ∮B·dl = μ₀I
Solenoid — B = μ₀nI
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