EXAMIANS
A 2 k resistor is in series with a 0.015 F capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
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In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is
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In a series RC circuit, when the frequency and the resistance are halved, the impedance
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A positive angle of 30° is equivalent to a negative angle of
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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
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The complex number 6 + j6 is equivalent to
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The complex number 40 angle 55° is equivalent to
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What is the angular difference between +j4 and –j4?
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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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