USCG Exam PracticeDC circuits and electronic principles
In a parallel circuit, three branch resistors are connected across a 24 V supply. If one branch opens (becomes an infinite-resistance break), what happens to the voltage across the remaining intact branches?
- A. The voltage across the remaining branches drops to zero.
- B. The voltage across the remaining branches increases above 24 V.
- ✓ The voltage across the remaining branches remains at 24 V.Correct
- D. The voltage redistributes equally among the remaining branches, each receiving a higher share.
Why C is correct
In a parallel circuit, all branches share the same voltage as the source. An open in one branch removes that branch's current from the total but does not alter the common voltage applied to the remaining branches. (NEETS Mod. 1 §3-3)
Cited:NEETS Mod. 1 §3-3