1. What is Power in Parallel Circuits?

Definition: This calculator computes the total power dissipated in a parallel circuit using the voltage and resistor values.

Purpose: It helps electrical engineers, students, and hobbyists determine power consumption in parallel circuit configurations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{total} \) — Total power (watts)
• \( V \) — Voltage across the circuit (volts)
• \( R \) — Resistance of each branch (ohms)

Explanation: The power for each parallel branch is calculated separately (V²/R) and then summed for total power.

3. Importance of Parallel Circuit Power Calculation

Details: Accurate power calculation ensures proper component selection, prevents overheating, and helps design efficient electrical systems.

4. Using the Calculator

Tips: Enter the circuit voltage and comma-separated resistor values (e.g., "10, 20, 30"). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is voltage the same across all parallel branches?
A: In parallel circuits, all components share the same voltage potential difference.

Q2: How does this differ from series circuit power calculation?
A: In series circuits, current is constant and power is calculated as I²R for each component.

Q3: What if I have different voltages across branches?
A: This calculator assumes standard parallel configuration with one voltage source.

Q4: Can I use this for AC circuits?
A: Only for purely resistive AC circuits. For reactive components, use apparent power calculations.

Q5: How accurate is this calculation?
A: It's theoretically precise for ideal resistors at constant voltage.