1. What is an Amperage to Voltage Calculator?

Definition: This calculator determines the voltage in an electrical circuit based on the power in watts and current in amperes.

Purpose: It helps electricians, engineers, and DIY enthusiasts calculate voltage when power and current are known.

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

Where:

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

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

3. Importance of Voltage Calculation

Details: Proper voltage calculation ensures electrical systems operate safely and efficiently, preventing equipment damage or failure.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What's the relationship between voltage, current, and power?
A: Power (P) equals voltage (V) multiplied by current (I). This calculator rearranges the formula to solve for voltage.

Q2: Can I use this for AC and DC circuits?
A: Yes, for DC circuits and AC circuits with purely resistive loads. For reactive loads, power factor must be considered.

Q3: What are typical household current values?
A: Common household circuits in North America typically carry 15-20 amps at 120 volts.

Q4: How do I measure power and current?
A: Power can be measured with a wattmeter, and current with an ammeter or multimeter.

Q5: What if I know voltage and want to find current or power?
A: Use our other calculators: Current Calculator (I = P/V) or Power Calculator (P = V×I).