Gay-Lussac's Law
### Formula:
$$\frac{P_1}{T_1}=\frac{P_2}{T_2}$$
### Terminologies:
- $$P_1$$ → Initial pressure.
- $$T_1$$ → Initial temperature.
- $$P_2$$ → Final pressure.
- $$T_2$$ → Final temperature.
### Usage:
- Used when volume remains constant and pressure changes with temperature.