If the total voltage applied in a series circuit of three resistors is 120 V and the voltage drop across R1 is 20 V and R2 drops 30 V, what is the voltage drop for R3?
A) 120 V
B) 70 V
C) 40 V
D) 50 V

Question

Quizplus · Accepted Answer

In a series circuit, the total voltage is the sum of the voltage drops across all components. Therefore, if R1 drops 20 V and R2 drops 30 V, R3 must drop the remaining voltage to make the total 120 V. So, 120 V - 20 V - 30 V = 70 V.

If the Total Voltage Applied in a Series Circuit of Three