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POWERPOINT PRESENTATION

SUBMITTED BY SANGEETHA V S - 13971022

( PHYSICAL SCIENCE OPTIONAL) KUCTE Kumarapuram

CHANGES ( ENCASED

ELECTRICITY)

CELLSCells are systems which generate electricity

through chemical changes.

The common types of cells are

● Dry Cell

● Mercury Cell

● Nickel Cadmium Cell

● Lithium Ion Cell

DRY CELL

Components of a Dry Cell

The dry cell consists of a zinc container

having a mixture of manganese dioxide

and carbon powder into which a

graphite rod is inserted. In between the

mixture and the rod, there is a paste of

ammonium chloride and zinc chloride

which act as the electrolyte.

Equipments using Dry Cell

Working of a Dry Cell

When the zinc container and the

brass cap of the graphite rod are

connected to a device, using wires,

electricity produced by the chemical

reaction in the cell will flow through

the device.

MERCURY CELL( BUTTON CELL)

Components of a Mercury Cell

The mercury cell is made by filling chemicals

like mercury, mercuric oxide, carbon powder,

zinc oxide etc in a steel container having the

size of a button. Mercury cells are used in

watches, calculators, small torches and toys.

Because of the presence of the highly

poisonous mercury, throwing them away after

use is becoming an environmental hazard.

Equipments using Mercury Cell

Storage Cells

Dry cells and Mercury cells are not

rechargeable. Cells which can be recharged

and reused are called stoage cells. Common

examples of storage cells include

● Nickel Cadmium Cell

● Lithium Ion Cell

Equipments using Nickel Cadmium Cell

Equipments using Lithium Ion Cell

THANK YOU