At the normal melting point (234.29 K) the volumes of liquid and solid mercury are 14.653 cm^3 /mol and 14.133 cm^3 /mole, respectively. The enthalpy of melting is 565 cal/mol. What is the melting point of mercury at 100 atm of pressure?

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

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

: )