1. What is Ohm's Law?

Ohm's Law is a fundamental principle in electrical engineering that describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. It states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them.

2. How Does the Calculator Work?

The calculator uses the Ohm's Law equation:

Where:

• \( V \) — Voltage (volts)
• \( I \) — Current (amps)
• \( R \) — Resistance (ohms)

Explanation: Enter any two known values to calculate the third unknown value. The calculator will automatically determine which value to calculate based on your input.

3. Importance of Ohm's Law

Details: Ohm's Law is essential for designing and analyzing electrical circuits, troubleshooting electrical problems, and understanding the relationship between electrical parameters in various applications from simple circuits to complex electronic systems.

4. Using the Calculator

Tips: Enter any two known values (voltage, current, or resistance) and leave the third field empty. The calculator will compute the missing value. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What if I enter all three values?
A: The calculator will only compute a result if exactly two values are provided and one field is left empty.

Q2: Can I use decimal values?
A: Yes, the calculator supports decimal values for more precise calculations.

Q3: What units does the calculator use?
A: The calculator uses volts for voltage, amps for current, and ohms for resistance.

Q4: Does Ohm's Law apply to AC circuits?
A: Ohm's Law applies to resistive AC circuits, but for circuits with capacitors and inductors, impedance must be considered instead of pure resistance.

Q5: Who discovered Ohm's Law?
A: Ohm's Law was named after German physicist Georg Ohm, who published his findings in 1827.