1. What is Current Through Resistor in Series?

Definition: This calculator determines the electric current flowing through resistors connected in series using Ohm's Law.

Purpose: It helps electronics engineers, students, and hobbyists calculate current in series circuits for proper circuit design and analysis.

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

Where:

• \( I \) — Current through the circuit (amperes)
• \( V \) — Voltage across the circuit (volts)
• \( R_{total} \) — Total resistance in series (ohms)

Explanation: In a series circuit, the same current flows through all components. The total resistance is the sum of all individual resistances.

3. Importance of Current Calculation

Details: Proper current calculation ensures components operate within their rated capacities, prevents overheating, and helps design efficient circuits.

4. Using the Calculator

Tips: Enter the voltage across the circuit and the total resistance of all series-connected resistors. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is current the same in series resistors?
A: In series circuits, there's only one path for current to flow, so the same current passes through each component.

Q2: How do I calculate total resistance in series?
A: Simply add all individual resistances: \( R_{total} = R_1 + R_2 + R_3 + ... \)

Q3: What if I have parallel resistors?
A: This calculator is for series circuits only. For parallel circuits, use the parallel resistance formula first.

Q4: What units should I use?
A: Use volts for voltage and ohms for resistance. The result will be in amperes (amps).

Q5: Can I use this for AC circuits?
A: This calculates DC current. For AC, you need to consider impedance which includes reactance.