Components A, B, and C are connected in series. Component D is connected in parallel to component B. Which of the following statements is TRUE?
A) The system works only if A works, B or C works, and D works.
B) Component B must work for the system to work.
C) The system works when A works, C, works, and either B or D works.
D) Components B and C are backups to A.
E) The system works if D works, and any of A, B, or C works.

Question

Quizplus · Accepted Answer

In a series circuit, the components are connected end-to-end, so the circuit must flow through all the components for the system to work. Therefore, the system works only if A works, B works (since it is in series with A), and C works (since it is also in series with A). However, component D is connected in parallel to component B, which means it provides an alternate path for the current to flow. So, the system will work as long as A works, C works, and either B or D works. Option C correctly states this.

Components A, B, and C Are Connected in Series