Enter the resistance of up to 5 resistors in parallel into the calculator to determine the equivalent resistance.
- All Electrical Calculators
- Series Resistance Calculator
- Resistor Divider Calculator
- Potential Difference Calculator
- Voltage Divider Calculator
- Parallel Voltage Calculator
- Series Current Calculator
- Parallel Current Calculator
Parallel Resistance Formula
The following formula is used to calculate the equivalent resistance of resistors in parallel.
1/R = 1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5
- Where R is the equivalent resistance
- R1 – R5 are the resistances of each individual resistor
Parallel Resistance Definition
Parallel resistance is defined as the equivalent resistance of a set of resistors in parallel.
Parallel Resistance Example
How to calculate parallel resistance?
- First, determine the individual resistances.
Measure the individual resistances of each resistor.
- Next, rearrange the equation above.
Rearrange the equation above to solve for R. This would be R = 1/ (1/R1 + (1/R2) + …)
- Finally, calculate the resistance.
Using the formula or calculator above, determine the equivalent resistance.
Parallel resistance is the equivalent resistance of a circuit with multiple resistors in which the current has the opportunity to flow through each resistor at the same time. This is in contrast to a series resistor where the current must flow through each resistor 1 at a time.