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? 3.7Ω 37.9Ω 4800Ω 14400Ω 3.7Ω 37.9Ω 4800Ω 14400Ω ANSWER DOWNLOAD EXAMIANS APP
RC Circuits When the frequency of the voltage applied to a series RC circuit is increased, the phase angle becomes erratic remains the same decreases increases becomes erratic remains the same decreases increases ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A 470 resistor and a 0.2 F capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is 212 318.3 3.14 mS + j2.12 mS 2.12 mS + j3.14 mS 212 318.3 3.14 mS + j2.12 mS 2.12 mS + j3.14 mS ANSWER DOWNLOAD EXAMIANS APP
RC Circuits When the frequency of the voltage applied to a series RC circuit is decreased, the impedance decreases doubles remains the same increases decreases doubles remains the same increases ANSWER DOWNLOAD EXAMIANS APP
RC Circuits An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist: R = XC R = 5XC R > XC R < XC R = XC R = 5XC R > XC R < XC ANSWER DOWNLOAD EXAMIANS APP
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 4.11 V 0.411 V 411.3 V 45.6 V 4.11 V 0.411 V ANSWER DOWNLOAD EXAMIANS APP
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