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 amperes (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: Understanding voltage is crucial for designing electrical circuits, troubleshooting electrical problems, and ensuring proper operation of electronic devices.

4. Using the Calculator

Tips: Enter current in amperes 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 are typical voltage values in household circuits?
A: In most countries, household circuits operate at 110-120V or 220-240V, depending on the country's electrical standards.

Q2: Can I use this for AC circuits?
A: This calculator works for DC circuits. For AC circuits, you need to consider impedance and phase angles.

Q3: What happens if resistance is zero?
A: In theory, voltage would be zero regardless of current, but in practice, zero resistance is impossible (superconductors approach it).

Q4: How does temperature affect the calculation?
A: Resistance changes with temperature in most materials, which would affect the voltage for a given current.

Q5: What's the difference between voltage and current?
A: Voltage is the potential difference that drives current, while current is the flow of electric charge.