1. What is a Voltage to Watts Calculator?

Definition: This calculator determines the power in watts from voltage and current using Ohm's Law.

Purpose: It helps electricians, engineers, and DIY enthusiasts calculate electrical power consumption or generation.

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 (potential difference) multiplied by the current (flow rate) gives the power (energy per unit time).

3. Importance of Power Calculation

Details: Accurate power calculation is essential for circuit design, energy efficiency, and electrical safety.

4. Using the Calculator

Tips: Enter the voltage in volts and current in amps. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Is this formula valid for both AC and DC?
A: This simple formula works for DC. For AC, you need to consider power factor (cos φ).

Q2: What's a typical household voltage?
A: In North America it's 120V, while in Europe it's typically 230V.

Q3: How does this relate to energy consumption?
A: Energy (kWh) = Power (kW) × Time (hours). This calculator gives the instantaneous power.

Q4: Can I calculate current if I know power and voltage?
A: Yes, use I = P/V. We may add this feature in a future version.

Q5: What's the maximum power for standard household circuits?
A: Typically 1800W (15A × 120V) in North America, but check local regulations.