Four resistors having resistances of 20 Ω,40 Ω,60 Ω,and 80 Ω are connected in series across an ideal 50-V dc source.What is the current through each resistor?
A)0.25 A
B)0.50 A
C)0.75 A
D)2.0 A
E)4.0 A

Question

Quizplus · Accepted Answer

In a series circuit, the current is the same through all components. To find the current, first find the total resistance by adding all the resistances: 20 Ω + 40 Ω + 60 Ω + 80 Ω = 200 Ω. Then, use Ohm's law (V = IR) to find the current: I = V/R = 50 V / 200 Ω = 0.25 A.

Four Resistors Having Resistances of 20 Ω,40 Ω,60 Ω,And 80