A resistor and capacitor are connected in series across an ac generator. The emf of the generator is given by v(t)=V0cosωt, where V0=120V, ω=120πrad/s, R=400Ω, and C=4.0μF. (a) What is the impedance of the circuit? (b) What is the amplitude of the current through the resistor? (c) Write an expression for the current through the resistor. (d) Write expressions representing the voltages across the resistor and across the capacitor.
A resistor and capacitor are connected in series across an ac generator. The emf of the generator is given by v(t)=V0cosωt, where V0=120V, ω=120πrad/s, R=400Ω, and C=4.0μF. (a) What is the impedance of the circuit? (b) What is the amplitude of the current through the resistor? (c) Write an expression for the current through the resistor. (d) Write expressions representing the voltages across the resistor and across the capacitor.
Chapter15: Alternating-current Circuits
Section: Chapter Questions
Problem 26P: A resistor and inductor are connected in series across an ac generator. The emf of the generator is...
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A resistor and capacitor are connected in series across an ac generator. The emf of the generator is
given by v(t)=V0cosωt, where V0=120V, ω=120πrad/s, R=400Ω, and C=4.0μF. (a) What is the
impedance of the circuit? (b) What is the amplitude of the current through the resistor? (c) Write an
expression for the current through the resistor. (d) Write expressions representing the voltages across
the resistor and across the capacitor.
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