NOTA KULIAH

CHAPTER 2 : CELLS AND BATTERIES

2.1 Understand the general features of cells and batteries.

2.1.1 Relationship between cells and batteries.

Ans 1: The primary difference between a battery and a cell is that a battery can be composed

of a number of cells. A cell can be a battery.

Ans 2: A cell can be part of a battery. It can be a battery all by itself, or combined with other

similar cells it can make a multi-cell battery, usually called just a battery.

Ans 3: A battery is lots of cells and a cell is just one. A battery is cilinder and a cell is a round

circle. Theoretically, a battery consists of two or more cells, but in practice most people

call a single cell a battery.

* Scientists have named the dry cells as primary cells and wet cells asid-plumbum as

secondary cell.

Electricity which produce by the exchange of chemical energy to electrical energy.

ELECTRIC ENERGY SOURCES

Energy sources that used to produce an electric or electric motion force (emf):

i. hydro system

ii. solar system

iii. gas system

iv. Steam system

v. chemicals such as petroleum, charcoal , nuklear

vi. wind system

CELLS

- Battery is a combination of two or more cells.

- There are two types of cells :

i) cells that should not be charge called primary cells

eg: Leclanche cells, mercury cells, Daniel cell

ii) cells that may charge called secondary cells

eg: plumbum-asid cell, alkaline nickel-cadmium cell