A long ideal solenoid has 2000 turns per metre and carries current 3 A. Calculate its internal magnetic field in mT. Take μ₀=4π×10⁻⁷ SI.

Question

G1 Physics · Accepted Answer

B=μ₀nI=4π×10⁻⁷×2000×3=7.54×10⁻³ T=7.54 mT.