A resistor and capacitor are connected in series with an applied AC voltage source.Separate voltmeter readings across the resistor and capacitor give values of 50 V and 60 V (rms),respectively.What is the effective (rms)voltage of the source?
A) 78 V
B) 90 V
C) 110 V
D) 25 V

Question

Quizplus · Accepted Answer

The effective (rms) voltage of the source in an RC series circuit is found using the Pythagorean theorem: V_source = √(V_R^2 + V_C^2) = √(50^2 + 60^2) = √(2500 + 3600) = √6100 ≈ 78 V.

A Resistor and Capacitor Are Connected in Series with an Applied