EXAMIANS
In a series RC circuit, when the frequency and the resistance are halved, the impedance
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A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 k. Current flow in the circuit is
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A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
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When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
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A capacitor with 150Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
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In the complex plane, the number 4 + j3 is located in the
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In the complex plane, the number 14 – j5 is located in the
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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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A 47Ω resistor and a capacitor with 150Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is
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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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