第20章磁性Magnetism原書 p.669–710

Key Equations重要な式

20.1 Magnetic Fields, Field Lines, and Force20.1 磁場、磁力線、力

the magnitude of the force on an electric charge

電荷にはたらく力の大きさ

the magnitude of the force on an electric charge

F = q v B \sin θ

the force on a wire carrying current

電流の流れる導線にはたらく力

the magnitude of the magnetic field created by a long, straight current-carrying wire

長いまっすぐな電流の流れる導線が作る磁場の大きさ

the magnitude of the magnetic field inside a solenoid

ソレノイドの内側の磁場の大きさ

the magnitude of the magnetic field inside a solenoid

B_{solenoid} = μ_{0} \frac{N I}{ℓ}

magnetic flux

Φ = B A \cos θ

emf

ε = - N \frac{Δ Φ}{Δ t}