In a series LRC circuit the rms voltage across the resistor is 80.0 V,across the capacitor is 120 V,and across the inductor is 60.0 V.What is the rms voltage applied to this circuit?
A) 60.0 V
B) 80.0 V
C) 100 V
D) 120 V
E) 140 V

Question

Quizplus · Accepted Answer

In a series LRC circuit, the total rms voltage is found using the Pythagorean theorem: V_total = √(V_R^2 + (V_L - V_C)^2). Here, V_R = 80 V, V_L = 60 V, V_C = 120 V. So, V_total = √(80^2 + (60 - 120)^2) = √(6400 + 3600) = √10000 = 100 V.

In a Series LRC Circuit the Rms Voltage Across the Resistor