Marcus wants to use two objects to compare the sizes of a proton and an electron if he uses a basketball for a proton which object would best represent an electron

If he represents the proton with a basketball, an electron could represent it with a pea or nicke /penny.

Explanation:

A proton has a mass about 1,836 times greater than the mass of the electron.

A proton is less than two trillionths of a millimeter wide, and an electron is approximately m in diameter.

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