1. What is Adding Resistors in Series?

Definition: This calculator computes the total resistance when resistors are connected in series in an electrical circuit.

Purpose: It helps electronics engineers, students, and hobbyists determine the equivalent resistance in series circuits.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( R_{total} \) — Total equivalent resistance (ohms)
• \( R_1, R_2, R_3 \) — Individual resistor values (ohms)

Explanation: In series connections, the total resistance is simply the sum of all individual resistances.

3. Importance of Series Resistance Calculation

Details: Proper resistance calculation ensures correct current flow, voltage division, and component selection in electronic circuits.

4. Using the Calculator

Tips: Enter at least two resistor values (all must be ≥ 0). The third resistor is optional for more complex circuits.

5. Frequently Asked Questions (FAQ)

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

Q2: How does voltage distribute in series resistors?
A: Voltage divides proportionally to each resistor's value (V = I×R).

Q3: Can I add more than three resistors?
A: Yes, the same principle applies - just sum all resistor values.

Q4: What's the difference between series and parallel?
A: In parallel, total resistance decreases (1/R_total = 1/R1 + 1/R2 + ...).

Q5: Why does total resistance increase in series?
A: The current path becomes longer, effectively increasing opposition to current flow.