Resistors r1 and r2 are connected in parallel to each other and to an emf source that has negligible internal resistance. what happened to the current through r1 when third resistor r3 is connected in series with r2? a. nothing
b. current increase through r1.
c. current decrease through r1.

Air conditioners not only cool air, but dry it as well. suppose that a room in a home measures 5.0m×9.0m×2.4m . if the outdoor temperature is 30 ∘c and the vapor pressure of water in the air is 85 % of the vapor pressure of water at this temperature, what mass of water must be removed from the air each time the volume of air in the room is cycled through the air conditioner? the vapor pressure for water at 30 ∘c is 31.8 torr.