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u=380sin(100t+180°)(V) u=-311sin2007πt(V) u=220sin(628t+180°)(V) u=220sin(100t+180°)(V)
i=20sin(100πt-rc1π/6)A i=0.4sin(100πt-n/6)A i=0.4sin(100πt-π/3)A i=0.4sin(100πt十π/3)A
u=220sin314t u=220sin100t u=220cos314t u=220cos100t
u=380sin(100t+180°)(V) u=-311sin200πt(V) u=220sin(628t+180°)(V) u=220sin(100t+180°)(V)
电流按正弦规律变化的电路 电流按非正弦规律变化的电路 电流或电压按非正弦规律做周期变化的电路 电压按非正弦规律做周期变化的电路
u=ωLImsinωt u=ωLImsin(ωt+90°) u=ωLsinωt u=ωLImsin(ωt-90°)
u=-311sin2007πt(V) u=220sin(628t+1800)(V) u=380sin(100t+1800)(V) u=220sin(100t+1800)(V)
i=20sin(100 -ππ/6)A i=0.4sin(100 -2πtπ /3)A i=0.4sin(100 π +π /3)A