EXAMIANS
The complex number 40 angle 55° is equivalent to
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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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Point +4 on the complex plane is
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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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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
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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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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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When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
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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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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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