Home Back

Voltage to Current Calculator

Current Formula:

\[ I = \frac{V}{R} \]

volts (V)
ohms (Ω)

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is a Voltage to Current Calculator?

Definition: This calculator determines the electric current flowing through a circuit based on voltage and resistance using Ohm's Law.

Purpose: It helps electricians, engineers, and students quickly calculate current in electrical circuits.

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

\[ I = \frac{V}{R} \]

Where:

Explanation: The voltage is divided by the resistance to calculate the current flowing through the circuit.

3. Importance of Current Calculation

Details: Proper current calculation ensures circuit safety, proper component selection, and efficient electrical system design.

4. Using the Calculator

Tips: Enter the voltage in volts and resistance in ohms. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is Ohm's Law?
A: Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

Q2: What units should I use?
A: Use volts for voltage, ohms for resistance, and the result will be in amperes (amps).

Q3: Can I use this for AC circuits?
A: This calculator is for DC circuits. For AC circuits with reactance, you'll need to consider impedance.

Q4: What if I get zero resistance?
A: Zero resistance would theoretically result in infinite current (short circuit), which isn't physically possible.

Q5: How accurate is this calculation?
A: The calculation is mathematically precise, but real-world factors like temperature and material properties may affect actual current.

Voltage to Current Calculator© - All Rights Reserved 2025