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, provided all physical conditions and temperatures remain constant. The law is named after German physicist Georg Ohm.

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

3. Importance of Voltage Calculation

Details: Understanding voltage is fundamental in electrical engineering and electronics. It helps in designing circuits, troubleshooting electrical problems, and ensuring proper operation of electrical 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 if I know voltage and want to find current?
A: You can rearrange Ohm's Law to \( I = V / R \). Current equals voltage divided by resistance.

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

Q3: Does Ohm's Law apply to all materials?
A: No, Ohm's Law applies only to ohmic materials (like most metals) where resistance remains constant regardless of voltage or current.

Q4: 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.

Q5: How accurate is this calculator?
A: The calculator provides theoretical values based on Ohm's Law. Real-world circuits may have additional factors like internal resistance or non-ohmic behavior.