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 voltage across a conductor is directly proportional to the current flowing through it.

2. How Does the Calculator Work?

The calculator uses Ohm's Law equation:

Where:

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

Explanation: The equation shows that voltage equals the product of current and resistance in a circuit.

3. Importance of Voltage Calculation

Details: Accurate voltage calculation is crucial for circuit design, electrical safety, troubleshooting electrical systems, and ensuring proper operation of electronic devices.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What are the units for each variable?
A: Voltage is measured in volts (V), current in amperes (amps), and resistance in ohms (Ω).

Q2: Does Ohm's Law apply to all circuits?
A: Ohm's Law applies to resistive circuits and components that follow linear relationships. It may not apply to non-linear components like diodes and transistors.

Q3: What is a typical voltage range?
A: Voltage can range from microvolts (μV) in sensitive electronics to kilovolts (kV) in power transmission systems.

Q4: How accurate is this calculation?
A: The calculation is mathematically precise for ideal resistive circuits. Real-world factors like temperature and material properties may affect actual results.

Q5: Can I use this for AC circuits?
A: For AC circuits with purely resistive loads, Ohm's Law applies directly. For reactive components, impedance calculations are needed.