1. What is a Current Voltage Wattage Calculator?

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

Purpose: It helps electricians, engineers, and DIYers calculate current flow in electrical circuits.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: The power (in watts) is divided by voltage (in volts) to calculate the current (in amperes).

3. Importance of Current Calculation

Details: Proper current calculation ensures circuit protection, proper wire sizing, and safe operation of electrical devices.

4. Using the Calculator

Tips: Enter the power in watts and voltage in volts (default 120V). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between AC and DC in these calculations?
A: The formula works for both, but for AC circuits with reactive components, power factor must be considered.

Q2: What's a typical household voltage?
A: In North America, 120V is standard for most outlets, while 240V is used for large appliances.

Q3: How do I find the power rating of a device?
A: Check the device's label or specifications - it's usually listed in watts (W) or volt-amps (VA).

Q4: Why is current important for circuit design?
A: Current determines wire gauge requirements and circuit breaker sizing to prevent overheating.

Q5: Can I calculate power if I know current and voltage?
A: Yes, using P = V × I. We can add this functionality in future versions.