1. What is Series Resistance?

In a series circuit, resistors are connected end-to-end, so the same current flows through each resistor. The total or equivalent resistance is the sum of all individual resistances.

2. How Does the Calculator Work?

The calculator uses the series resistance equation:

Where:

• \( R_{eq} \) — Equivalent resistance (Ω)
• \( R1 \) — Resistance of first resistor (Ω)
• \( R2 \) — Resistance of second resistor (Ω)

Explanation: In series connections, resistances simply add up because the current has to pass through each resistor sequentially.

3. Importance of Series Resistance Calculation

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 both resistors. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Does the order of resistors matter in series?
A: No, the equivalent resistance is the same regardless of the order of resistors in series.

Q2: What happens to current in a series circuit?
A: The same current flows through all components in a series circuit.

Q3: How does voltage distribute in series resistors?
A: Voltage divides proportionally to the resistance values (higher resistance gets more voltage drop).

Q4: Can I calculate for more than two resistors?
A: Yes, the same principle applies: R_eq = R1 + R2 + R3 + ... + Rn.

Q5: What's the difference between series and parallel?
A: In parallel, resistors share the same voltage points and the equivalent resistance is less than any individual resistor.