electrical resistance made useful

1. 9WI’s
electrical
RESISTANCE

2. Resistance
Heaters become really hot because every heater has a resistor in it. Every heater has
electrons in it that power the heater and warm the house up, but the only way heaters
are able to get hotter and hotter is because the heater has a resistor that makes all the
electrons that are moving around are forced to bunch up into a small space that makes
them rub up against the wires inside the heater that have atoms on them and when an
electron collides with an atom it makes a sort of flash that speeds up the electrons
meaning more collision's and with the collision’s comes the hotness.

3. A heater has a process of turning energy into heat. Electric heaters
work because of the electric current that is forced through wires that
contain a good deal of electrical resistance.
What is resistance? Resistance makes electrons slow down and moves
some of their energy to heat energy. Some substances resist or prevent
electrical current more then others, EG: copper resists less electrical
current then plastic.

4. Electrical resistance is where something
slows down electrons, to stop them going
too fast, this is used to control them,
because without resistance, electrons
would travel to fast and overheat. An
example of resistance is coiled wire, the
wire would be long and thin, forcing
electrons to go slower. Resistance is used
in many things, like a kettle. In a kettle
electricity goes from the plug into the
cord, then into a coil of wire. In the coil
there is lots of resistance, so when the
electricity goes into it, the coil will heat up.
The coil is heated up because when
electrons get forced into a small gap then
collide with atoms, making friction, which
then causes heat. This is very useful in
kettles, oven, and over things. Although it
may be dangerous because it is so hot.
The coil is in the bottom

5. The arrow symbolises the element. When the wire (right)
heats up because the electron s are going really fast. The
electrons push against the atom and are trying to squeeze
through a small gap

6. Resistance
Resistance is what slows the electrons down from
moving through the circuit. To increase the resistance,
make the wires thinner and use materials that electrons
don’t like to go through. In the toasters case, it uses a
metal called nichrome which electrons can not easily
pass through. The more resistance the hotter the
appliance. The red wires burning is the resistance that
the electrons go through. The red wires is the electrons
moving through the circuit, but because of the
resistance they are moving at a slower pace. The
resistance can be controlled depending on what
materials you use. The resistance is useful, because it
makes the appliance hotter and it can control the
electrons. The only dangers of resistance is there can be
too much resistance.

7. Electrons are
negative

8. Electrical resistance is when something slows down the
electrons. In this example there is a layer in the light bulb
which slows down the electrons. The tungsten filament in
the light bulb increases resistance. Resistance can be
controlled by the materials.Resistance is important because
it makes the flow of current.

9. Hair Dryer
Resistance is the reason for electrons slowing in speed and is
used in our daily lives. This useful state is found in wires that
are thin or have been constructed from a material which is a
weak conductor. Once a fair amount of resistance has been
allocated to a wire, electrons find it challenging to pass
through so the speed at which they travel decreases.
This is because the huge amount of electrons must each pass through the
selected wire to reach their destination, causing their pace to become
slower to prevent a scientific ‘traffic jam’.
Resistance is useful for this reason as electrons slowing in speed leads to
electricity reaching the destination (In this case, a hair-dryer) at a later date.
Therefore, the electricity and the time which it is used may be controlled. This is
useful for not only hair-dryers but most electrical equipment. Like most great
things, dangers are involved. Too much resistance may lead to no electricity
reaching the equipment. I would also imagine that resistance may glitch in some
way, causing the electrons to travel at a high speed when they are unable to pass
through at such a pace. Overall, the risk is quite low if resistance is used in the
correct manner. There is certainly no reason to not use resistance as it affects us
in many positive ways, everyday.

10. Resistance in a TV
Resistance is when it is harder for electrons to travel and makes them slower. This is an important
factor in a TV because too much electrons would travel very fast and rub against each other to
create heat and energy to overheat the appliance and so the TV can explode. But you can control
the amount of electrons through resistance for eg. You can make the wires thinner and longer so
less electrons get through the wire and use more energy, so when they get to the appliance they
will be weaker . Too much resistance can be bad as well because the TV won’t have enough
electricity to power it. To insulate the electrcity you put rubber but in most places plastic is used so
that the electricity doesn’t electrocute anyone. Also to further resistance ,metals that aren’t very
good conductors ( but let electricity pass) are used instead of copper which is exellent in
conducting. Usually resistance is used when there is an abundance of electricity that needs to be
used at a certain pace and amount.

11. What is resistance?
Resistance is what makes electrons slow down. The more faster they go, the
less Resistance. The more slower they go the more Resistance.
How do you think Resistance has increased?
It has increased when the smaller the wire the less the electrons will power
the appliance.
What happens because of the resistance?
If there is too much resistance then the electrons can’t get through for the
alliance to work. Also a hair dyer contains a metal called nichrome it has a lot
more resistance than any other wire made from copper.
Can the Resistance be controlled?
Yes, because of the sizes of the wires and what type of metal is contained
inside the wires.
Is the resistance useful?
Yes, because it wouldn't overheat and burn the equipment.

12. Resistance

13. Electrical Resistance is when something slows
down electrons to stop them going fast they
have these to slow down the electrons so that
they wont go to fast and over heat Yes
Resistance can be controlled and yes it is
useful Some danger’s in resistance

14. The arrow is pointing at the plug were all of the
electrons is rushing threw and is heating up the
element

15. Resistance

16. Resistance
What & how is the resistance
Increase?
-Resistance=Voltage2/Power
=1202/1100
=13.1 (3sf
-Metal called nichrome
-A hair dryer, the temperature of the air
stream from which is automatically controlled
by the temperature of the hair being dried, is
provided
-A hair dryer apparatus and method for use in
hair care.

17. How do you think resistance is
increased?
By making the wire longer and
skinnier
What happens because of the
resistance?
Its harder for the electrons to
get through
Are there any dangers from
resistance?
No, because resistance help
What is a resistance? heaters not to over heat
Resistance is when electrons
travel through coiled wire that’s
made out of special metal and its
hard for them to get through. The
faster electrons go, the hotter the
wire goes.

18. Resistance.
Electric Fry Pan
The object that I have chosen The resistance is useful because
is an Electric Fry Pan. people may not finished using it
the pan but if they turn the
The danger with resistance heat down, the electrons slow
for a fry pan is that when down because the pan doesn't
you have the heat on high need that much heat so some
the electrons go faster and electrons can stop working or
faster and faster and the just slow down.
heat on the pan becomes so
hot that if the electrons keep
moving the handles may get
hot as well. 
The pan wont automatically be as hot
as you want it to because the electrons When the plug to the pan gets plugged into the
start to flow through the vertical wall, the pan automatically heats at a slow pace
pipe/chord, but as you turn up the heat because the electrons get faster and faster while
on the pan the electrons start to speed they flow through the plug and get to the base of
up. the pan.