मराठी

Internal Energy (U)

Advertisements

Topics

Estimated time: 3 minutes
Maharashtra State Board: Class 12

Key Points: Internal Energy (U)

Every system is associated with a definite amount of energy stored in it, called its internal energy (U). It is the sum of all forms of kinetic and potential energies of the particles in the system.

  • Internal energy is a state function — its change depends only on initial and final states.
  • It is an extensive property.

Internal energy changes when:

  • Heat flows into or out of the system
  • Work is done on or by the system
  • Matter enters or leaves the system
ΔU = U2 − U1
Advertisements
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×