Being the ideal engine, the maximum COP of a Carnot cycle ...

[strangeaffliction]

Being the ideal engine, the maximum COP of a Carnot cycle operated in reverse as a refrigerator is
 
  A) (Th/Tc)(1  Tc/Th)-1.
  B) 100.
  C) (1  Tc/Th)-1.
  D) (Tc/Th)  (1  Tc/Th)-1.

Question 2

When two or more resistors are connected in parallel to a battery
 
  A) the voltage across each resistor is the same.
  B) the total current flowing from the battery equals the sum of the currents flowing through each resistor.
  C) the equivalent resistance of the combination is less than the resistance of any one of the resistors.
  D) all of the other choices are true.

[Jane]

Answer to Question 1

D

Answer to Question 2

D