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 (amps)
• \( V \) — Voltage in volts
• \( R \) — Resistance in ohms

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 crucial 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 for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What are the units of measurement?
A: Current is measured in amperes (amps), voltage in volts, and resistance in ohms.

Q2: Does Ohm's Law apply to all materials?
A: Ohm's Law applies to ohmic materials where resistance remains constant regardless of voltage. Some materials like semiconductors are non-ohmic.

Q3: What is a typical current range?
A: Current can range from microamps (μA) in electronic circuits to hundreds of amps in power systems.

Q4: How does temperature affect resistance?
A: For most conductors, resistance increases with temperature. This should be considered in precision calculations.

Q5: Can I calculate power using this?
A: Power can be calculated using P = V × I or P = I² × R once current is known.