Ohm's Law Calculator
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Volts
Power: 0 Watts
Understand Voltage, Current & Resistance
Ohm's Law is the foundation of electronics and physics. It states that the current flowing through a conductor is directly proportional to the voltage applied across it. CalculatorBud’s **Ohm's Law Calculator** helps you solve for any variable in the equation instantly.
The Formulas (The Magic Triangle)
Students often use the "V-I-R Triangle" to remember these relationships. Here are the three ways to use the formula:
| To Find | Formula | Explanation |
|---|---|---|
| Voltage (V) | V = I × R | Current × Resistance |
| Current (I) | I = V ÷ R | Voltage divided by Resistance |
| Resistance (R) | R = V ÷ I | Voltage divided by Current |
| Power (P) | P = V × I | Voltage × Current |
Key Definitions
- Voltage (V): Measured in Volts. Think of this as the "pressure" pushing electricity through a wire.
- Current (I): Measured in Amps. This is the rate of flow of the electrons.
- Resistance (R): Measured in Ohms (Ω). This is how much the material fights against the flow of electrons.