Ampere Calculator Tool

About the Ampere Calculator Tool

This tool calculates amperage (current) using the basic elements of electrical circuits: voltage, power, and resistance. It uses Ohm's law and power formulas to provide accurate calculations.

How to Use the Ampere Calculator

1. Select the calculation type (voltage and power, voltage and resistance, or power and resistance).
2. Enter the required values based on your selected calculation type.
3. Click the "Calculate" button.
4. The result (amperage) will be displayed.

Calculation Methods

Amperage (current) can be calculated using three different methods:

1. Calculation from Voltage and Power:

   Using the power formula P = V * I

   I = P / V

   Where I is amperage (A), P is power (W), and V is voltage (V)

2. Calculation from Voltage and Resistance:

   Using Ohm's law V = I * R

   I = V / R

   Where I is amperage (A), V is voltage (V), and R is resistance (Ω)

3. Calculation from Power and Resistance:

   Using the power formula P = I^2 * R

   I = √(P / R)

   Where I is amperage (A), P is power (W), and R is resistance (Ω)

Using these formulas, you can accurately calculate amperage (current) from any two given values.

Frequently Asked Questions (FAQ)

1. What is an Ampere?

An ampere (symbol: A) is the unit of electric current. One ampere is defined as the flow of one coulomb of electric charge per second.

2. What is Ohm's Law?

Ohm's law states the relationship between voltage (V), current (I), and resistance (R), expressed as V = I * R.

3. What is the Power Formula?

The power formula is expressed as P = V * I, where P is power (W), V is voltage (V), and I is current (A).