When an iron metal is heated to a temperature of 200 degrees C and placed in a water at 25 degrees C The heat energy be transferred from*

Heat energy is transferred from the iron metal to the water.

Explanation:

Heat energy is transferred from the iron metal to the water. The process in which this occurs is referred to as heat transfer. The type of heat transfer that occurs here is referred to as conduction. Conduction is a type of heat transfer involving the transfer of heat energy from a substance with higher temperature to a substance with lower temperature by direct contact.

In the case of the question, the iron metal has a higher temperature of 200 degrees and is brought in contact with another substance (water) with a lower temperature of 25 degrees.

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