A capacitor that is initially uncharged is connected in series with a resistor and an emf source with E = 100 V and negligible internal resistance. Just after the circuit is completed, the current through the resistor is 6.6×10−5 A . The time constant for the circuit is 6.2 s .

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.