1. What is a Current Calculator?

Definition: This calculator determines the electrical current (in amperes) based on power (in watts) and voltage (in volts).

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

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

Where:

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

Explanation: The power is divided by voltage to determine the current flowing through the circuit.

3. Importance of Current Calculation

Details: Proper current calculation ensures safe circuit design, proper component selection, and prevents electrical hazards.

4. Using the Calculator

Tips: Enter the power in watts and voltage in volts. Both values must be greater than 0.

5. Frequently Asked Questions (FAQ)

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

Q2: What is a typical household voltage?
A: In North America, 120V is standard, while many other countries use 230V.

Q3: How do I find the power (watts) of a device?
A: Check the device's label or specifications. Power is often listed in watts.

Q4: What if I know current and want to find power?
A: Rearrange the formula: \( P = V \times I \)

Q5: Why is current important in circuit design?
A: Current determines wire sizing, fuse/breaker selection, and component ratings to prevent overheating.