1. What is Series Circuit Equivalent Resistance?

The equivalent resistance of resistors in series is the sum of all individual resistances. In a series circuit, the same current flows through all resistors, and the total resistance is simply the sum of all resistances.

2. How Does the Calculator Work?

The calculator uses the series resistance formula:

Where:

• \( R_{eq} \) — Equivalent resistance (Ω)
• \( R_1, R_2, \dots R_n \) — Individual resistances (Ω)

Explanation: In series circuits, resistances simply add up because the current has to pass through each resistor in sequence.

3. Importance of Equivalent Resistance

Details: Calculating equivalent resistance helps determine total circuit resistance, current flow, and voltage drops across components in series circuits.

4. Using the Calculator

Tips: Enter resistance values in ohms (Ω) for each resistor. You must provide at least two resistors. All values must be non-negative.

5. Frequently Asked Questions (FAQ)

Q1: What happens to current in a series circuit?
A: The same current flows through all components in a series circuit.

Q2: How does adding resistors affect total resistance?
A: In series, adding more resistors always increases the total resistance.

Q3: What's the difference between series and parallel?
A: In parallel circuits, voltage is the same across components and equivalent resistance is less than any individual resistor.

Q4: Can I add more than three resistors?
A: Yes, the same principle applies - just sum all resistances in the series.

Q5: What if one resistor in series fails?
A: The entire circuit will be broken and no current will flow.