Consider a series LCR circuit with R= 90.0 ⦠and L= 0.160 Henrys,driven by a sinusoidal emf with Erms= 5.90 Volts at frequency f=220 Hz. The sinusoidal current lags the emf by 47.0 degrees.
Calculate the capacitance C.
What is the rms current in the circuit?
If the frequency of the emf is changed to the resonant frequency ofthe circuit, what is the rms current?
Consider aseries RL circuit with R= 84.0 ⦠and an unknown inductor L, drivenby an AC emf with Erms= 33.0 Volts at frequency f= 6.80kHz. If we measure the current in the circuit, we findIrms= 0.167 Amps.
What is theinductance L?
What is themagnitude of the phase angle between the applied voltage and thecurrent?
What is theratio of the power dissipated in the resistor to the power thatwould be dissipated if the inductor were not in the circuit?(Assume that Erms stays the same.)
