Ohm's Law Calculator
Calculate voltage, current, resistance, and power using Ohm's Law.
Your Input
Select a calculation type, enter the known values and units, then click Calculate to see the result and step-by-step solution.
Πλήρης Οδηγός χρήσης
What is Ohm's Law?
Ohm's Law 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.
Τρόπος Χρήσης
- Select a calculation type
- Enter the known values
- Select appropriate units
- Click Calculate to see the result and step-by-step solution
- Use Reset to clear and hide results
Ohm's Law Formulas
Δυναμικό:
V = I × R
Ρεύμα:
I = V / R
Αντίσταση:
R = V / I
Εξουσία:
P = V × I
Power (alternative):
P = I² × R
Power (alternative):
P = V² / R
Τύποι Υπολογισμού
- Δυναμικό: Calculate voltage from current and resistance
- Ρεύμα: Calculate current from voltage and resistance
- Αντίσταση: Calculate resistance from voltage and current
- Εξουσία: Calculate power using various formulas
Υποστηριζόμενες μονάδες
Δυναμικό: V, mV, kV
Ρεύμα: A, mA, µA
Αντίσταση: Ω, kΩ, MΩ, mΩ
Εξουσία: W, mW, kW, MW
Σημαντικές Σημειώσεις
- Voltage and current must be non-negative
- Resistance must be greater than zero
- Ohm's Law applies to linear circuits
- Results are rounded to 6 decimal places
Κοινές Εφαρμογές
- Circuit design and analysis
- Resistor selection
- Power supply calculations
- Electrical troubleshooting
- Electronics education