Determine the potential difference Vab for the circuit in

Chapter 18: Law of Thermodynamics  Zeroth Law of thermodynamics: If object A is in thermal equilibrium with object B, and object B is separately in thermal equilibrium with object C, then objects A and C will be in thermal equilibrium if they are placed in thermal contact  The first law of thermodynamics is a statement of the conservation of energy. o If a system’s volume is constant, and heat is added, its internal energy increases. o If a system does work on the external world, and no heat is added, its internal energy decreases  Work done by an expanding gas, constant pressure: W = PV o If the volume stays constant, nothing moves and no work is done. o If the temperature is constant, the pressure varies inversely with the v