What is the function of the battery, the switch, the light bulb, and the wiresplease give one or two sentences describing the function of each...

BATTERY

Battery is
as part of a circuit that provides the electricity. Battery can be said as the source to
provide electricity to the
circuit.

So its main
function is to supply electric power in order for electric items to
work.

LIGHT
BULB

A light bulb is that component of
circuit that lights up when electricity flows through it and vice
versa.

Its main function is to tell whether
electricity is being supplied or not. Its function is also to light up dark
places.

SWITCH

Switch
is something that can make a gap in a circuit, to turn things on or off. Basically it is
the main component of electricity that controls the electricity that flows through light
items by turning it on or off.

Its main function
is to turn on or off the power of electricity flowing through
wires.

WIRES

Wires
are used to join parts of a circuit. Electricity flows through
wires.

Its main function is to provide electrical
items the power they need to work, provided by
battery.