91Ó°ÊÓ

Find the resonant frequency in each ac circuit. \(L=2.00 \mu \mathrm{H}\) and \(C=35.0 \mu \mathrm{F}\)

For an ac circuit with \(R=375 \Omega, C=5.00 \mu \mathrm{F}, E=20.0 \mathrm{~V}\), and \(f=1.00 \mathrm{kHz}\) : (a) find the impedance (in ohms), (b) find the phase angle, and (c) find the current.

Find the impedance and current in each ac circuit. \(R=225 \Omega, L=10.0 \mathrm{mH}, C=0.200 \mu \mathrm{F}, f=1.00 \mathrm{kHz}, E=15.0 \mathrm{~V}\)

Find the capacitive reactance (in ohms) in each ac circuit. \(C=7.00 \mathrm{mF}, f=10 \overline{0} \mathrm{~Hz}\)

What power is developed by a device that draws \(6.00 \mathrm{~A}\) with resistance \(12.0 \Omega ?\)

Find the apparent power produced by a generating station whose actual power is \(12 \overline{0}, 000 \mathrm{~kW}\) and whose power factor is \(0.900\).

For an ac circuit with \(R=4.80 \mathrm{k} \Omega, C=45.0 \mu \mathrm{F}, E=15.0 \mathrm{~V}\), and \(f=1.75 \mathrm{kHz}\) : (a) find the impedance (in ohms), (b) find the phase angle, and (c) find the current.

If the maximum ac voltage on a line is \(165 \mathrm{~V}\), what is the instantaneous voltage at \(\theta=45.0^{\circ}\) ?

Find the resonant frequency in each ac circuit. \(L=2.50 \mu \mathrm{H}\) and \(C=7.00 \mu \mathrm{F}\)

For a circuit with \(R=1.00 \mathrm{k} \Omega, L=50.0 \mathrm{mH}\), and \(f=10.0 \mathrm{kHz}\) : (a) find the impedance (in ohms), (b) find the phase angle, and (c) find the current if the voltage is \(15.0 \mathrm{~V}\).