1. What is Ohm's Law?

Ohm's Law states that the voltage (V) across a conductor is directly proportional to the current (I) flowing through it, with the constant of proportionality being the resistance (R). It's a fundamental principle in electrical engineering and physics.

2. How Does the Calculator Work?

The calculator uses Ohm's Law equation:

Where:

• \( V \) — Voltage in Volts
• \( I \) — Current in Amps
• \( R \) — Resistance in Ohms

Explanation: The equation shows the relationship between voltage, current, and resistance in an electrical circuit.

3. Importance of Ohm's Law

Details: Ohm's Law is essential for designing electrical circuits, troubleshooting electrical problems, and understanding how electrical components interact in a system.

4. Using the Calculator

Tips: Enter current in Amps and resistance in Ohms. Both values must be positive numbers. The calculator will compute the voltage using Ohm's Law.

5. Frequently Asked Questions (FAQ)

Q1: Can Ohm's Law be used for AC circuits?
A: The basic form applies to DC circuits. For AC circuits, impedance (which includes resistance and reactance) must be considered.

Q2: What are typical values for current and resistance?
A: Current in household circuits might range from milliamps to tens of amps. Resistance values vary widely depending on the component.

Q3: When does Ohm's Law not apply?
A: Ohm's Law doesn't apply to non-ohmic materials where resistance changes with voltage or current (like diodes, transistors).

Q4: How accurate is this calculator?
A: The calculation is mathematically precise, but real-world measurements may have instrument errors.

Q5: Can I calculate current or resistance if I know the other two values?
A: Yes, the equation can be rearranged to solve for any one variable if the other two are known.