Which statement(s) is/are TRUE about the pressure of a gas? SELECT ALL THAT APPLY

a Pressure increases when volume increases
and temperature decreases.

b Pressure increases when temperature
increases under constant volume.

С Pressure increases when volume is
decreased under constant temperature.

D Pressure decreases when the amount of gas
is increased under constant volume and
temperature.

B and C are correct

Explanation:

a) false, pressure increases when volume decreases and temperature increases

b) true, pressure and temperature are directly proportional

c) true, pressure and volume are inversely proportional

d) false, pressure and amount of gas are directly proportional

all of these relations can be summarized by the ideal gas equation:

pV = nRT

p: pressure

V: volume

n: amount of substance

R: gas constant

T: absolute temperature

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current