A series RC circuit contains two resistors and two capacitors. The resistors are 39 Ω and 56 Ω . The capacitors have capacitive reactances of 80 Ω and 40 Ω . When calculating the circuit values, what is the total resistance?
A) 25 Ω
B) 95 Ω
C) 125 Ω
D) 130 Ω

Question

Quizplus · Accepted Answer

The total resistance in a series circuit is simply the sum of all resistances (and resistive components) in the circuit. Here, you have two resistors with resistances of 39 Ω and 56 Ω. The capacitive reactances are not resistances and should not be added to the resistances. Therefore, the total resistance is 39 Ω + 56 Ω = 95 Ω.

A Series RC Circuit Contains Two Resistors and Two Capacitors