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 resistance being the constant of proportionality. It's a fundamental principle in electrical engineering and physics.

2. How Does the Calculator Work?

The calculator uses the Ohm's Law equation:

Where:

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

Explanation: The voltage across a resistor equals the product of the current flowing through it and its resistance.

3. Importance of Voltage Calculation

Details: Calculating voltage is essential for circuit design, troubleshooting electrical systems, and ensuring components operate within their specified voltage ranges.

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: Can I use this for AC circuits?
A: This calculator works for DC circuits. For AC circuits with reactive components, you'll need to consider impedance (Z) instead of just resistance.

Q2: What are typical voltage values in circuits?
A: Common voltages range from 1.5V (batteries) to 120V/240V (household) to thousands of volts in power transmission.

Q3: How accurate is this calculation?
A: The calculation is mathematically exact for ideal resistors. Real-world components may have tolerances and non-ideal behaviors.

Q4: What if my resistance is zero?
A: Zero resistance would theoretically result in zero voltage (short circuit), but real wires have some resistance.

Q5: Can I calculate current or resistance with this?
A: Yes, by rearranging the equation: \( I = V/R \) or \( R = V/I \).