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Linear Circuits I

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Problem 127 of 132

Series RL: Current Phase

Random numbersPHZMedium

vs(t)=15cos⁡(500t) Vv_s(t) = 15\cos(500t)\ \text{V}. Writing the steady-state current as i(t)=Imcos⁡(500t+θ)i(t) = I_m\cos(500t + \theta), find the phase angle θ\theta, in degrees.

vs​15 VR50 ΩL50 mHi
°

Answers within 2% are accepted. Units with SI prefixes work too, like 0.003 A or 3 mA. Use a minus sign for negative values.

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