• 2022-06-06
    已知,交流电压U1=10sin100πtV,U2=10sin(100πt-60°)V,则u=u1-u2的解析式为()
    A: U=10sin(100πt+60°)V
    B: U=10sin(100πt-60°)V
    C: U=8sin(100πt+30°)V
    D: U=8sin(100πt-30°)V