RC Circuits A capacitor with 150Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is Z = 150 –90° Ω Z = 150 angle 180° Ω Z = 150 angle – 90° Ω Z = 150 Z = 150 –90° Ω Z = 150 angle 180° Ω Z = 150 angle – 90° Ω Z = 150 ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A positive angle of 30° is equivalent to a negative angle of –30° –180° –60° –330° –30° –180° –60° –330° ANSWER DOWNLOAD EXAMIANS APP
RC Circuits In a series RC circuit, when the frequency and the resistance are halved, the impedance cannot be determined without values is halved is reduced to one-fourth doubles cannot be determined without values is halved is reduced to one-fourth doubles ANSWER DOWNLOAD EXAMIANS APP
RC Circuits When the frequency of the voltage applied to a series RC circuit is increased, the phase angle increases remains the same becomes erratic decreases increases remains the same becomes erratic decreases ANSWER DOWNLOAD EXAMIANS APP
RC Circuits 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 Z = 47Ω + j150Ω Z = 103Ω Z = 197Ω Z = 47Ω – j150Ω Z = 47Ω + j150Ω Z = 103Ω Z = 197Ω Z = 47Ω – j150Ω 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 9.2 mA 4.6 mA 92 mA 460 mA 9.2 mA 4.6 mA 92 mA 460 mA ANSWER DOWNLOAD EXAMIANS APP
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