3. How MUCH ENERGY IS REQUIRED TO
CHANGE
ICE INTO WATER AT O'c?
125
4.CHANGE
125
ICE AT -25°C
How MUCH ENERGY IS REQUIRED TO
WATER AT 40°c?
To

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

a is the correct answer

the objects have the same charge is correct.

nathan lee