1. What is Ohm's Law?

Ohm's Law states that the voltage across a conductor is directly proportional to the current flowing through it, with the constant of proportionality being the resistance. 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 (V)
• \( I \) — Current in Amps (A)
• \( R \) — Resistance in Ohms (Ω)

Explanation: The equation shows that voltage equals current multiplied by resistance. This relationship is linear when resistance is constant.

3. Importance of Voltage Calculation

Details: Calculating voltage is essential for designing electrical circuits, selecting appropriate components, and ensuring safe operation of electrical systems.

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 in Volts.

5. Frequently Asked Questions (FAQ)

Q1: What if I know voltage and want to find current?
A: Rearrange the equation: \( I = V / R \). Current equals voltage divided by resistance.

Q2: What are typical voltage values in household circuits?
A: In most countries, household circuits are either 120V or 230V AC.

Q3: Does Ohm's Law apply to all materials?
A: Ohm's Law applies to "ohmic" materials where resistance is constant. Some materials like diodes are non-ohmic.

Q4: What's the difference between AC and DC voltage?
A: DC (Direct Current) voltage is constant, while AC (Alternating Current) voltage changes direction periodically.

Q5: How accurate is this calculation?
A: The calculation is mathematically exact for ideal ohmic conductors at constant temperature.