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.

2. How Does The Calculator Work?

The calculator uses Ohm's Law formula:

Where:

• \( R \) — Resistance (Ohms, Ω)
• \( V \) — Voltage (Volts, V)
• \( I \) — Current (Amperes, A)

Explanation: The resistance is calculated by dividing the voltage by the current flowing through the circuit.

3. Importance Of Resistance Calculation

Details: Calculating resistance is crucial for designing electrical circuits, selecting appropriate components, troubleshooting electrical problems, and ensuring circuit safety and efficiency.

4. Using The Calculator

Tips: Enter voltage in volts (V) and current in amperes (A). Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What Is The Unit Of Resistance?
A: The unit of resistance is the Ohm (Ω), named after German physicist Georg Simon Ohm.

Q2: Can Ohm's Law Be Applied To All Circuits?
A: Ohm's Law applies to linear, ohmic conductors. It may not accurately describe non-linear components like diodes and transistors.

Q3: What Factors Affect Resistance?
A: Resistance depends on the material's resistivity, length, cross-sectional area, and temperature.

Q4: How Does Temperature Affect Resistance?
A: For most conductors, resistance increases with temperature, while for semiconductors, resistance typically decreases with temperature.

Q5: What Are Typical Resistance Values In Circuits?
A: Resistance values range from milliohms (mΩ) in conductors to megaohms (MΩ) in insulators, depending on the application.