A 250 Ω resistor is connected in series with a 4.80 μF capacitor and an ac source. The voltage across the capacitor is v_c = (7.60 V) sin[(120 rad/s)t]. (a) Determine the capacitive reactance of the capacitor. (b) Derive an expression for the voltage _vR across the resistor

A resistor and an unknown device are connected in series with an AC generator as shown in the diagram below. The current lags behind the voltage of the generator by 69º. R www X (a) If the total impedance of the circuit is 223 , what is the value of the resistor in the circuit? Ω (b) What is the reactance of the device? Ω

A 2.04 kN resistor is connected to an AC voltage source with an rms voltage of 230 V. HINT (a) What is the maximum potential difference across the resistor (in V)? V (b) What is the maximum current through the resistor (in A)? A (c) What is the rms current through the resistor (in A)? A (d) What is the average power dissipated by the resistor (in W)?

A resistor and capacitor are connected in series across an ac generator. The voltage of the generator is given by V(t) = Vo cos(wt), where Vo What is the magnitude of the impedance of the RC circuit? (b) What is the amplitude of the current through the resistor? (c) What is the phase difference between the voltage and current? 120 V, w = 120T rad/s, R = 600N, and C = 4.5µF. (a) Hint a. The magnitude of the impedance is Ω. b. The amplitude of the current through the resistor is mA. c. The phase difference between the voltage and current is rad. (Take the positive phase difference to mean that voltage is leading the current by this phase difference.)

An AC source i(t)=(20.0[mA])cos((10.0[rad/s])t) is connected to a 100[μF] capacitor , what is the potential through the capacitor?

What maximum current is delivered by an AC source with AV max = 39.4 V and f = 76.8 Hz when connected across a 3.70-µF capacitor? mA

A circuit consists of a 3.38-μF and a 6.98-μF capacitor connected in series across the terminals of a 617-Hz generator. The voltage of the generator is 120 V. (a) Determine the equivalent capacitance of the two capacitors. (b) Find the current in the circuit. Note: The ac current and voltage are rms values and power is an average value unless indicated otherwise. (a) Number i Units (b) Number i Units