A sample of CO2 has a mass of 43.5 g. How many molecules are in this sample?

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

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.