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RC CIRCUITS

RC Circuits
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is

18 kHz
0 Hz
6 kHz
12 kHz

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RC Circuits
The voltages in Problem 4 are measured at a certain frequency. To make the capacitor voltage greater than the resistor voltage, the frequency

is held constant
must be decreased
has no effect
must be increased

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RC Circuits
In the complex plane, the number 4 + j3 is located in the

first quadrant
second quadrant
fourth quadrant
third quadrant

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RC Circuits
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit

decreases to zero
increases
does not change
decreases

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RC Circuits
A 47Ω resistor and a capacitor with a capacitive reactance of 120 are in series across an ac source. What is the circuit impedance, Z?

129Ω
12.9Ω
167Ω
73Ω

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