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
• \( I \) — Current in Amperes (Amps)
• \( R \) — Resistance in Ohms

Explanation: The voltage is calculated by multiplying the current (in amps) by the resistance (in ohms).

3. Importance of Voltage Calculation

Details: Calculating voltage is essential for designing electrical circuits, troubleshooting electrical problems, and ensuring proper operation of electrical devices.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What if I know voltage and want to find current?
A: You can rearrange the formula: \( I = V / R \)

Q2: What if I know voltage and current but want resistance?
A: The formula becomes: \( R = V / I \)

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

Q4: What are typical voltage values in household circuits?
A: In the US, standard household voltage is 120V for most outlets and 240V for large appliances.

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