RL直列回路:電流と電圧の位相差(v = vR + vL)
ω=2πf = XL=ωL = Z=√(R²+(ωL)²) = I₀=V₀/Z = φ=tan⁻¹(ωL/R) = VR0=V₀R/Z = VL0=V₀ωL/Z = 電源振幅 V₀ = 10 V