Series Circuits · Physics Reference Tables (2025 Edition)
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The Series Circuits box from the Reference Tables for Physical Science: Physics (2025 Edition) gives the three rules for components connected in series. It primarily supports HS-PS3-6, together with the Electricity equations and the Parallel Circuits box.
What the series circuits box shows
In a series circuit there is one path for the current, so the current is the same through every component; the potential difference of the source is shared, so the potential differences across the components add up to it; and the equivalent resistance is the sum of the resistances, so adding a resistor in series raises the total resistance and lowers the current. With V = IR these rules give the current and the potential difference across each component.
Rows
A link or an {{Rt}} chip (Template:Rt) can point at one equation or constant with these anchors; each one lands on the table above:
series-current– I = I1 = I2 = …series-voltage– V = V1 + V2 + …series-resistance– Req = R1 + R2 + …
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.
No released question has needed this table yet.