First Law Of Thermodynamics
Category : JEE Main & Advanced
Helmholtz and Robert Mayer proposed first law of thermodynamics. This law is also known as law of conservation of energy. It states that,
“Energy can neither be created nor destroyed although it can be converted from one form into another.”
\[{{E}_{2}}-{{E}_{1}}=\]\[\Delta E\,=q+w\]
i.e. (Change in internal energy) = (Heat added to the system) +(Work done on the system)
If a system does work (w) on the surroundings, its internal energy decreases. In this case, \[\Delta E=q+(-w)=q-w\]
i.e.(Change in internal energy)=(Heat added to the system) – (work done by the system)
The relationship between internal energy, work and heat is a mathematical statement of first law of thermodynamics.
You need to login to perform this action.
You will be redirected in
3 sec
