1. What is Ohm's Law?

Ohm's Law is a fundamental principle in electrical engineering that describes the relationship between voltage, current, and resistance in an electrical circuit. It states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them.

2. How Does the Calculator Work?

The calculator uses Ohm's Law equation:

Where:

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

Explanation: The equation shows that current increases with higher voltage and decreases with higher resistance.

3. Importance of Current Calculation

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

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What are the units for current calculation?
A: Current is measured in amperes (A), voltage in volts (V), and resistance in ohms (Ω).

Q2: Can this calculator be used for AC circuits?
A: This calculator uses the basic DC version of Ohm's Law. For AC circuits with reactive components, additional factors like impedance must be considered.

Q3: What is a typical current range in household circuits?
A: Household circuits typically carry currents from 0.5A to 20A, depending on the appliance and circuit design.

Q4: How does temperature affect resistance?
A: For most conductors, resistance increases with temperature. This calculator assumes constant temperature conditions.

Q5: What safety precautions should be taken when working with electrical circuits?
A: Always disconnect power before working on circuits, use proper insulation, and follow electrical safety standards and regulations.