1. What is Ohm's Law?

Ohm's Law is a fundamental principle in electrical engineering that describes the relationship between voltage, current, and resistance in an electrical circuit. It states that the voltage across a conductor is directly proportional to the current flowing through it.

2. How Does the Calculator Work?

The calculator uses Ohm's Law equation:

Where:

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

Explanation: The equation shows that voltage equals the product of current and resistance in a circuit.

3. Importance of Voltage Calculation

Details: Accurate voltage calculation is crucial for circuit design, electrical safety, component selection, and troubleshooting electrical systems.

4. Using the Calculator

Tips: Enter current in amperes (A) and resistance in ohms (Ω). Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between AC and DC voltage?
A: DC (Direct Current) voltage flows in one direction constantly, while AC (Alternating Current) voltage changes direction periodically.

Q2: What are typical voltage values in household circuits?
A: Standard household voltage is 120V in North America and 230V in most other countries.

Q3: How does resistance affect voltage?
A: For a given current, higher resistance results in higher voltage drop across the resistor.

Q4: Can this calculator be used for both AC and DC circuits?
A: Yes, Ohm's Law applies to both AC and DC circuits, though for AC circuits with reactive components, impedance should be used instead of resistance.

Q5: What safety precautions should be taken when working with electrical circuits?
A: Always de-energize circuits before working on them, use proper personal protective equipment, and follow electrical safety standards.