Positive SSL
    14.素養(4)
1 如圖所示之交流電壓波形,其電壓方程式為
A v(t)=100sin(1570t+90°) V
B v(t)=1002sin(1570t-90°) V
C v(t)=100sin(785t-90°) V
D v(t)=1002sin(785t+90°) V

Vm=100V,θ = +90°

T=4ms,f = 1T =250Hz

ω=2πf=2×3.14×250=1570(弳/秒)

v(t)=100sin(1570t+90°) V