Question

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

Answer 1

Nuclear reactor

Step-by-step explanation:

A nuclear reactor allows to control nuclear chain reactions which produce heat and this is used to move a turbine to create electricity. So, according to this, the answer is that a device in which a chain reaction is initiated and controlled with the purpose of producing electrical power is called a nuclear reactor.

Answer 2

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.