⚡ Calculate Any Value
E = I × R | P = E × I
📊 Calculation Results
Voltage (E)
—
Current (I)
—
Resistance (R)
—
Power (P)
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📚 Ohm's Law Triangle
Ohm's Law describes the relationship between voltage (E), current (I), and resistance (R):
E = I × R
P = E × I
Where:
- E = Voltage in Volts
- I = Current in Amperes
- R = Resistance in Ohms
- P = Power in Watts
💡 Common Examples
12V system drawing 5A: R = 12/5 = 2.4Ω, P = 12×5 = 60W
120V circuit with 240W load: I = 240/120 = 2A, R = 120/2 = 60Ω
240V heater at 4500W: I = 4500/240 = 18.75A, R = 240/18.75 = 12.8Ω