# hertz, resistance, ohms

• Dec 15th 2008, 12:59 PM
hertz, 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, 05:28 PM
mr fantastic
Quote:

$i = I_p \sin (\omega t)$
$v_i = I_p \sqrt{R^2 + (\omega L)^2} \sin (\omega t + \phi)$
where $\omega = 2 \pi f$ and $\phi = \tan^{-1} \left(\frac{\omega L}{R} \right)$.
Note that you're given $\omega L = 340 \, \Omega$, $R = 100 \, \Omega$ and $f = 60$ Hz and you're told the peak voltage.