what is the total current for an ac circuit with 120volts, 60 hertz, resistance is 100 ohms and inductive reactance is 340 ohms?

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- Dec 15th 2008, 11:59 AMhomemadehertz, resistance, ohms
what is the total current for an ac circuit with 120volts, 60 hertz, resistance is 100 ohms and inductive reactance is 340 ohms?

- Dec 15th 2008, 04:28 PMmr fantastic
Assuming your circuit is an RL filter, use the following:

$\displaystyle i = I_p \sin (\omega t)$

$\displaystyle v_i = I_p \sqrt{R^2 + (\omega L)^2} \sin (\omega t + \phi)$

where $\displaystyle \omega = 2 \pi f$ and $\displaystyle \phi = \tan^{-1} \left(\frac{\omega L}{R} \right)$.

Note that you're given $\displaystyle \omega L = 340 \, \Omega$, $\displaystyle R = 100 \, \Omega$ and $\displaystyle f = 60$ Hz and you're told the peak voltage.