EXAMIANS
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
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A positive angle of 30° is equivalent to a negative angle of
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A 120Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?
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The voltages in Problem 4 are measured at a certain frequency. To make the capacitor voltage greater than the resistor voltage, the frequency
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The complex number 6 + j6 is equivalent to
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In the complex plane, the number 14 – j5 is located in the
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Point +4 on the complex plane is
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In the complex plane, the number 4 + j3 is located in the
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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?
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An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:
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