A cord is an electrical wire or wires with a protective
covering, usually for connecting electrical equipment to
the supply of electricity; a power supply cord is
composed of an attachment plug and a flexible cord.
The power supply cord is the component that supplies
power to a computer or other electrical device. Most
personal computers can be plugged into standard
electrical outlets. The power supply then pulls the
required amount of electricity and converts the AC
current to DC current. It also regulates the voltage
to eliminate voltage or current spikes and surges
common in most electrical systems.
Sources:
https://www.standardslearn.org/documents/sl_case
_study_power_supply.pdf (last accessed on 27.03.2018).
http://www.csgnetwork.com/glossaryp.html#power
[Computer, Telephony & Electronics Industry Glossary]
(last accessed on 27.03.2018).
https://studfiles.net/preview/2892854/page:4/
(last accessed on 27.03.2018).