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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

12 kHz
0 Hz
18 kHz
6 kHz

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RC Circuits
A 2 kΩ resistor and a 0.002 μF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is

130 mW
13 mW
845 mW
84.5 mW

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RC Circuits
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance

increases
remains the same
decreases
doubles

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RC Circuits
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle

increases
remains the same
becomes erratic
decreases

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RC Circuits
In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is

200 mA
141 mA
100 mA
282 mA

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RC Circuits
An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:

R = 5XC
R < XC
R > XC
R = XC

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