"Ohm" (symbol: Ω) is a unit of electrical resistance named after **Georg Simon Ohm**. It does not have a full form as it is a proper noun. However, it is derived from **Ohm's Law**, which states:
\[
V = IR
\]
where:
- \( V \) = Voltage (Volts)
- \( I \) = Current (Amperes)
- \( R \) = Resistance (Ohms)
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