1. What is a Volt to Ampere Calculator?

Definition: This calculator determines the electric current (in amperes) based on voltage and resistance using Ohm's Law.

Purpose: It helps electrical engineers, technicians, and students quickly calculate current in DC circuits or AC circuits with resistive loads.

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

Where:

• \( I \) — Current (amperes)
• \( V \) — Voltage (volts)
• \( R \) — Resistance (ohms)

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

3. Importance of Current Calculation

Details: Accurate current calculation is essential for circuit design, component selection, and safety considerations in electrical systems.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Does this work for AC circuits?
A: This applies to DC circuits and AC circuits with purely resistive loads. For reactive loads, impedance must be considered.

Q2: What if I know power instead of resistance?
A: Use I = P/V where P is power in watts. We have a separate Power Calculator for this purpose.

Q3: What's a typical household voltage?
A: In North America, 120V for standard outlets and 240V for large appliances. Europe typically uses 230V.

Q4: How do I measure resistance?
A: Use a multimeter set to ohms measurement when the circuit is powered off.

Q5: What happens if resistance is zero?
A: This would create a short circuit with theoretically infinite current, which is dangerous and should be avoided.