1. What is a Wattage Voltage Amperage Calculator?

Definition: This calculator determines electrical power (wattage) based on voltage and current using Ohm's Law.

Purpose: It helps electricians, engineers, and DIY enthusiasts calculate power consumption or determine circuit requirements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Power in watts (W)
• \( V \) — Voltage in volts (V)
• \( I \) — Current in amperes (A)

Explanation: The voltage (electrical potential) multiplied by current (electron flow rate) equals the power (energy per unit time).

3. Importance of Power Calculation

Details: Proper power calculation ensures correct circuit design, proper wire sizing, and safe operation of electrical devices.

4. Using the Calculator

Tips: Enter the voltage in volts and current in amps. Both values must be > 0. The calculator will compute the power in watts.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between watts, volts, and amps?
A: Volts measure electrical potential, amps measure current flow, and watts measure power (energy per second).

Q2: Can I calculate any two values if I know the third?
A: Yes, with different versions of the formula: \( V = P/I \) and \( I = P/V \).

Q3: What's a typical household voltage?
A: In North America, 120V for standard outlets and 240V for large appliances. Europe uses 230V.

Q4: How does this relate to circuit breakers?
A: Circuit breakers are rated in amps. Knowing voltage and power helps select the right breaker size.

Q5: What about AC vs DC power?
A: This calculator works for both, but AC circuits with reactive components need power factor considerations.