4 Ω के प्रेरकीय प्रतिघात (inductive reactance) वाले एक शुद्ध रिएक्टर को 120 V AC जनरेटर के टर्मिनलों से जोड़ा गया है। रिएक्टर से जुड़ी प्रतिघाती शक्ति (reactive power) की गणना करें।

In an AC parallel circuit consisting of multiple branches, the total admittance (Y) is the phasor sum of the individual branch admittances. Which of the following expressions correctly represents the magnitude of the total admittance in terms of total conductance (G) and net susceptance (B)?

What happens to the phase angle between the voltage and the current in a series resistor-inductor (R-L) circuit when the frequency of the applied AC voltage is increased?