Difference between revisions of "Parallel Circuits"
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== What the parallel circuits box shows == | == What the parallel circuits box shows == | ||
In a parallel circuit each branch is connected directly across the source, so every branch has the same potential difference; the current from the source splits among the branches, so the branch currents add up to the total; and the reciprocals of the resistances add, so the equivalent resistance is smaller than the smallest branch resistance, and adding a branch raises the total current. With [[Electricity#ohm|''V'' = ''IR'']] these rules give the current in each branch. | In a parallel circuit each branch is connected directly across the source, so every branch has the same potential difference; the current from the source splits among the branches, so the branch currents add up to the total; and the reciprocals of the resistances add, so the equivalent resistance is smaller than the smallest branch resistance, and adding a branch raises the total current. With [[Electricity#ohm|''V'' = ''IR'']] these rules give the current in each branch. | ||
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== Regents Exam Questions == | == Regents Exam Questions == | ||
Latest revision as of 17:52, 25 October 2026
| ⇱ All Physics Reference Tables (2025 Edition) | |
| ← Series Circuits | |
The Parallel Circuits box from the Reference Tables for Physical Science: Physics (2025 Edition) gives the three rules for components connected in parallel. It primarily supports HS-PS3-6, together with the Electricity equations and the Series Circuits box.
What the parallel circuits box shows
In a parallel circuit each branch is connected directly across the source, so every branch has the same potential difference; the current from the source splits among the branches, so the branch currents add up to the total; and the reciprocals of the resistances add, so the equivalent resistance is smaller than the smallest branch resistance, and adding a branch raises the total current. With V = IR these rules give the current in each branch.
Regents Exam Questions
Released Regents questions that cannot be answered without this table, listed by exam. Each link opens the question with its answer key; the standard is the one the question assesses.
| Exam | Cluster | Question | Standard |
|---|---|---|---|
| June 2026 Physics Regents | Flashlight Physics | Question 33 | HS-PS3-6 |