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, with the constant of proportionality being the resistance.

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

Where:

• \( V \) — Voltage (volts)
• \( I \) — Current (amps)
• \( R \) — 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, troubleshooting electrical systems, and ensuring proper operation of electronic devices.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What are the units used in Ohm's Law?
A: Voltage is measured in volts (V), current in amperes (amps, A), and resistance in ohms (Ω).

Q2: Can Ohm's Law be applied to AC circuits?
A: Yes, but for AC circuits with reactive components, additional considerations for impedance are needed.

Q3: What is the relationship between the three variables?
A: Voltage is directly proportional to both current and resistance. If current increases, voltage increases (with constant resistance). If resistance increases, voltage increases (with constant current).

Q4: Are there limitations to Ohm's Law?
A: Ohm's Law applies to ohmic materials where resistance remains constant. It may not accurately describe non-ohmic materials like semiconductors.

Q5: How is Ohm's Law used in practical applications?
A: It's used in circuit design, electrical troubleshooting, power calculation, and determining appropriate component values in electronic systems.