Adevice in which a chain reaction is initiated and controlled with the purpose of producing electrical power is called

Answer

A nuclear reactor

Explanation

Nuclear reaction produces a lot of energy due to its chain reaction.

Nuclear energy is produced when a radioactive element such as uranium splits. The process is called nuclear fusion.

This generates heats producing steam that turns the turbine hence generating electric energy.

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6

d. platinum would have the greatest temperature increase because it has the lowest specific heat.