In physics, the symbol
Ω (omega) represents
ohms, which is the unit of electrical resistance. It measures how much a material resists the flow of electric current.
When a conductor has a resistance of
1 ohm, it means that a voltage of
1 volt is needed to push a current of
1 ampere through the conductor. The relationship between voltage (V), current (I), and resistance (R) is given by
Ohm's Law:
\[
V = I \times R
\]
So, in simple terms:
- Ω = Ohms (unit of resistance)
- Resistance is what opposes the flow of electric current in a circuit.