1. What is a Current from Voltage Calculator?

Definition: This calculator determines the electric current flowing through a circuit based on the voltage and resistance.

Purpose: It helps electrical engineers, technicians, and students quickly calculate current using Ohm's Law.

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: Proper 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. Resistance must be greater than 0.

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: Can I calculate current for AC circuits?
A: This calculator works for DC circuits. For AC circuits, you need to consider impedance (Z) instead of just resistance.

Q3: What happens if resistance is zero?
A: Division by zero is undefined, which represents a short circuit condition with theoretically infinite current.

Q4: What units does this calculator use?
A: The calculator uses volts for voltage, ohms for resistance, and outputs current in amperes (amps).

Q5: How accurate is this calculation?
A: The calculation is theoretically exact for ideal resistors at constant temperature. Real-world factors may affect actual current.