Total Resistance Formula (Series):
Rtotal: Total resistance (Ω)
Ri: Individual resistances (Ω)
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Definition: This calculator computes the total resistance in a series circuit by summing individual resistances.
Purpose: It helps electrical engineers, technicians, and students determine the equivalent resistance in series circuits.
The calculator uses the formula:
Where:
Explanation: In series circuits, the total resistance is simply the sum of all individual resistances.
Details: Accurate resistance calculation is crucial for circuit design, current flow prediction, and proper component selection.
Tips: Enter at least one resistance value (required). Additional resistances are optional. All values must be ≥ 0.
Q1: What's the difference between series and parallel resistance?
A: In series, resistances add directly. In parallel, reciprocals add (1/Rtotal = 1/R1 + 1/R2 + ...).
Q2: Does order of resistors matter in series?
A: No, the total resistance is the same regardless of the order of resistors.
Q3: What happens to current in a series circuit?
A: Current remains constant throughout all components in a series circuit.
Q4: Can I add more than three resistors?
A: This calculator handles up to three resistors. For more, simply add their values to the total.
Q5: What if I leave some fields blank?
A: Blank fields are treated as 0 ohms. Only Resistance 1 is required.