Find voltage when current and resistance are known
V = I × RINPUT VALUES
V
A
Ω
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CALCULATION SHEET
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REFERENCE — UNDERSTANDING OHM'S LAW
Ohm's Law describes the relationship between voltage (V), current (I), and resistance (R) in electrical circuits.
V = I × R
Voltage equals current times resistance
P = V × I
Power equals voltage times current
Key Concepts:
- •Voltage (V): Electrical pressure measured in Volts
- •Current (I): Flow of electrons measured in Amperes
- •Resistance (R): Opposition to current measured in Ohms
- •Power (P): Rate of energy transfer measured in Watts