What is Ohm’s Law?

Ohm’s Law is a fundamental principle in electronics that defines 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, given a constant resistance.

Ohm’s Law Formula

• Voltage (V) = Current (I) × Resistance (R)
• Current (I) = Voltage (V) ÷ Resistance (R)
• Resistance (R) = Voltage (V) ÷ Current (I)

This calculator automatically solves the missing value when any two parameters are provided.

How to Use This Calculator

1. Enter any two values:
   • Voltage (Volts)
   • Current (Amps)
   • Resistance (Ohms)
2. The third value will be calculated instantly
3. Results update in real time

Practical Applications

• Designing LED circuits
• Calculating resistor values
• Troubleshooting circuits
• Power analysis

Example Calculation

If a circuit has:

• Voltage = 12V
• Resistance = 6Ω

Then:

Current = 12 ÷ 6 = 2A