An open-minded scientist does all of the following except a. think creatively to design experiments. b. accept new ideas that he or she doesn't agree
with. c. ask questions about observations. d. question existing ideas.

An open-minded scientist does all of the following except accept new ideas that he or she doesn't agree with. The answer is letter B. It is not the nature of the scientist to accept ideas not of is own.

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

i just learnt this recently but i need to look through my notes again