1. What is Series Resistance?

In a series circuit, resistors are connected end-to-end so that the same current flows through each resistor. The total or equivalent resistance is simply the sum of all individual 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 connection, the current has only one path to take, so the total resistance is the sum of all resistances in that path.

3. Importance of Series Resistance

Details: Understanding series resistance is fundamental for circuit analysis, voltage divider design, and calculating current in simple circuits.

4. Using the Calculator

Tips: Enter resistance values in ohms (Ω). You can calculate with 2 or 3 resistors (leave R₃ blank or 0 for just 2 resistors).

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 voltage distribute in series resistors?
A: Voltage divides proportionally to the resistance values (larger voltage drop across larger resistors).

Q3: Can I add more than 3 resistors?
A: Yes, the same principle applies - just sum all resistances. Our calculator shows the pattern for extension.

Q4: What's the difference between series and parallel?
A: In parallel, resistors share the same voltage and current divides, with total resistance being less than any individual resistor.

Q5: Why does total resistance increase in series?
A: Each additional resistor adds opposition to the current flow, increasing the total resistance.