V = IR in series and parellel Flashcards
In series current is…
the same throughout the whole circuit
The total resistance in series is the…
sum of the resistance of all components
In series, the voltage is…
the total of the voltage across all components. If the resistance of each component is the same, then the total voltage is shared equally. But if not, then the voltage depends on resistance and current i.e. V = IR
In parallel circuits, the voltage is the same across each…
branch and equal to the source voltage.
In parallel the resistance is…
1/Rtotal = 1/R1 + 1/R2 + 1/R3
The total current in parallel is just the…
sum of all the currents of each branch.
Ohm’s Law
Ohm’s law (V = IR) can be used to relate voltage, current, and resistance in both series and parallel circuits.