🧲 Torque on a Loop — drag the loop and watch τ = m·B·sinθ
A current loop in a uniform field B has a magnetic moment m = I·A along its normal. The field twists it with torque τ = m·B·sinθ, where θ is the angle between m and B. τ = 0 when m lines up with B; τ is largest when m is perpendicular to B.
A current loop sits in a uniform field B; its magnetic moment m points along the loop's normal.
τ = m·B·sinθ = 16.8 mN·m · m = I·A = 0.060 A·m²
θ is measured between m and B · τ = 0 at θ = 0°, τ = m·B (max) at θ = 90°