What does a battery do in a circuit?

Answer 1

It stores electrical energy charge which then provides power to the circuit. Electricity is the stream of electrons through a conductive way like a wire. This way is known as a circuit.

Batteries have three sections, an anode (- ), a cathode (+), and the electrolyte. The cathode and anode (the positive and negative sides at either end of a conventional battery) are snared to an electrical circuit.

Answer 2

A battery stores CHEMICAL energy.

Then, when a circuit is connected to it, the chemical energy is converted into ELECTRICAL energy (called "charge", measured in coulombs) which is sent around the circuit as a flow of electric current (called "coulombs per second", which has been given the international unit name "ampere").

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Batteries provide electrical energy.

A battery sends electricity through the wires so that, for example, a bulb can light up or a buzzer can work.

For more information see the answers to the Related Questions shown below.

It's the power

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The battery maintains a difference of electrical potential between two points in the circuit. With the appropriate choice of components and interconnecting paths, the potential difference can cause a flow of electrical current through the circuit. The nature and arrangement of the circuit components determines the results of the current.

Answer 3

to turn off and on the computer

The CR2032 battery on the motherboard in desktop computers is used as a CMOS battery (basically keeps track of what the time is whilst the computer is not connected to external power (amongst other things)). In a laptop or netbook, the battery (much larger) can be used as a standalone power source, resulting in portability for a certain amount of time. Laptops and netbooks also have CMOS batteries, but are designed to last longer (as not easily accessible) so tend to not look like normal button-cell batteries.

Answer 4

If you are referring to a laptop battery, its job is to power the machine. If you are referring to the battery on the motherboard, its job is to keep the CMOS powered. This is a few bits of memory that remember items like your BIOS settings, and the time.

Answer 5

In a laptop it allows a portable source of power. However if you're referring to the BIOS battery, it powers the CMOS (Complementary Metal Oxide Semiconductor) in order to store data (Date, time etc - depends on motherboard-) After the computer has been switched off and lost it's main power.

Answer 6

so that when your PC is turned off at the wall it can keep things like memmory and important components working.

Answer 7

Provides electricity to portable devices that must operate where power outlets are not readily available.