# What is electricity?

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## What is electricity?

Background

Electricity is a type of energy. An object has electrical energy when it has the ability to conduct electricity. Electricity is measured in Volts.

Electrical energy can be easily converted to other forms of electricity.

There are two main types of electricity:

• main stream electricity
• battery electricity

Battery-electricity

Electrical energy are stored in batteries. The energy in batteries are called chemical energy. When electrical energy moves, the electrons flows in an electrical circuit.

The basic elements of an electrical circuit is:

a source of energy e.g. a battery

 Sketch Symbol

a conductor e.g. a sort of metal in the shape of a wire

 Sketch Symbol

a switch to form an open or closed circuit

 Sketch Symbol

a load e.g. a source of light, sound, motion or heat

 Sketch Symbol a light a buzzer an electrical motor

Two or more of the same component in an electric circuit can be connected in two different ways in the circuit;

• in series where a positive pole of one cell is linked to the negative pole of another cell;
• in parallel where all the positive poles of the cells are connected with one another and all the negative poles are also connected like this.

Advantage of cells in series – current supply becomes more powerful

Advantage of cells in parallel – the cells can produce the same current for longer.

To the teacher:

These worksheets should be done in groups. Each group can construct a different circuit and then explain it to the rest of the class before completing a worksheet. A class should be divided into 7 groups, because there are 7 worksheets. This would save a huge amount of time. Each group should construct a test circuit with a switch, 1,5 V lamp, lamp holder and a 1,5 V cell in a cell holder. First screw the holders and switch on the board, add the wire between them and then add the cell and lightbulb.

Equipment and tools needed:

• 1,5 V batteries
• 1.5 V light bulbs
• light bulb holders
• wire/flex
• 7 strip connectors
• battery holders
• 7 switches
• small screws
• flat nose and star screwdrivers
• 7 pieces of insulation board 150 mm by 150 mm
• connectors
• buzzers with a low voltage
• diodes and resistors

## To show knowledge and understanding of electric circuits [lo 2.2]

WORKSHEET 1:

• Connect one 1,5 V cell in a battery holder to a 1,5 V lamp in a lamp holder with wire and a switch on a piece of insulation board.
• Make a simple drawing of the circuit.

1.3 Draw a circuit diagram of the circuit, using the correct symbols.

1.4 Underline:

The light bulb shines (very brightly/bright/dimly/ not at all).

WORKSHEET 2:

2.1 Connect one 1,5 V cell in a cell holder to two 1,5 V lamps in two lamp holders in parallel using wire and adding a switch on a piece of insulation board.

• Draw a circuit diagram of the circuit.
• Unscrew one of the lamps from its holder. What happens to the other lamp? Explain why this happens.
• Underline:

The light bulbs shine (very brightly/ brightly/ dimly/ not at all).

how can chip be made from sand
is this allso about nanoscale material
Almas
are nano particles real
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
no can't
Lohitha
where is the latest information on a no technology how can I find it
William
currently
William
where we get a research paper on Nano chemistry....?
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
what about nanotechnology for water purification
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
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