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RC Circuits

RC Circuits
The complex number 40 angle 55° is equivalent to

45.88 + j65.52
40 + j40
22.94 + j32.76
55 + j55

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RC Circuits
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

19.2 V
27 V
1.9 V
3 V

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RC Circuits
A 12 kΩ resistor is in series with a 0.02 μF capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3 angle 0° mA, what is the source voltage expressed in polar form?

411.3 V
45.6 V
0.411 V
4.11 V

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RC Circuits
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?

734 and θ = –38.9°
2121 and θ = –19.5°
707 and θ = –19.5°
73.4 and θ = –19.5°

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RC Circuits
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?

37.9Ω
4800Ω
3.7Ω
14400Ω

ANSWER DOWNLOAD EXAMIANS APP

RC Circuits
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

460 mA
92 mA
9.2 mA
4.6 mA

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