Question

multiple - choice question
how do mechanical relays work in a computer?
keep the computer from overheating by sharing the work between two or more computers
pass information over different pathways
use electricity and electromagnetism to open and close mechanical switches
rewatch
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Explanation:

Mechanical relays in a computer operate by using electricity and electromagnetism. When an electric current passes through a coil (electromagnet), it creates a magnetic field. This magnetic field attracts a mechanical switch (armature). When the current stops, the magnetic field disappears, and a spring or other mechanical force returns the switch to its original position. This opening and closing of the mechanical switch is how mechanical relays function. The first option about sharing work to prevent overheating is related to load - balancing (not relay function). The second option about passing information over different pathways is more about data routing (not relay operation).

Answer:

Use electricity and electromagnetism to open and close mechanical switches.