1. What is an Amp Watt Volt Calculator?

Definition: This calculator determines electrical power (watts) from voltage (volts) and current (amps) using Ohm's Law.

Purpose: It helps electricians, engineers, and DIY enthusiasts calculate power consumption in electrical circuits.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: The voltage is multiplied by the current to determine the power consumption in watts.

3. Importance of Power Calculation

Details: Accurate power calculation ensures proper circuit design, component selection, and electrical safety.

4. Using the Calculator

Tips: Enter the voltage in volts and current in amps. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between watts, volts, and amps?
A: Volts measure electrical pressure, amps measure current flow, and watts measure power (rate of energy consumption).

Q2: Can I calculate current if I know power and voltage?
A: Yes, rearrange the formula: \( I = \frac{P}{V} \).

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

Q4: How does this relate to energy costs?
A: Power (watts) × time (hours) = energy (watt-hours), which utilities bill you for.

Q5: Does this work for both AC and DC circuits?
A: For DC and pure resistive AC loads, yes. For reactive AC loads, power factor must be considered.