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Math Help - complex numbers

  1. #1
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    complex numbers

    the potential difference across a circuit is given by the complex number
    V = 40 + j35 volts

    & the current is given by the complex number
    I = 6 + j3 amps

    How do i find the phase difference (the angle) between the phasors for Voltage V and Current I?
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  2. #2
    MHF Contributor ebaines's Avatar
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    Re: complex numbers

    Quote Originally Posted by tomjay View Post
    How do i find the phase difference (the angle) between the phasors for Voltage V and Current I?
    Convert the voltage and current from cartesian coordinates (x,y) - where x is the real value and y the imaginary - to polar coordinates of the form (r,\theta). The phase angle is the difference between the two values of  \theta.
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  3. #3
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    Re: complex numbers

    thanks for that just figured it out but good to double check
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