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Electricity iSearch Project

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Riley Massey

on 24 October 2014

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Transcript of Electricity iSearch Project

Electricity iSearch Project
By: Riley Massey

Electric Current:
Definition- A flow of electric charge carried by electrons moving in a wire or in ions in an electrolyte.

The amount of electrons flowing through a conductive material and the measure of the amount of electrical charge

Electric current flowing through a conductor uses voltage so anything pluged in will get electric current. Electric current is measured in amps and resistors slow the electric current down in a circuit.
Diagram of Amperes
Electric current Diagram
Power Source

Electric current
Some examples of electric current are lamps, televisions, and clocks
lamps can relate to amps and volts and a lightbulb is a resistor.

A potential difference has to exist between the two points
a certain number of electrons must be met
measured in amps
Electric currents: They were investigated once the battery was made by Allesandro Volta on March 20. Then unknown research was done about electric current after the discovery of the battery but no one knows for sure by who or exactly when.

Future: Electric currents have a promising future in power plants. It is predicted that electricity will be distributed differently. That power lines will be leading away from the point of use.
Definition: The unit of electric current that is equal to the flow of a coloumb per second

Relation: As the number of watts (power) increases, the number of amps or the current increases.

Examples: the average tv uses 12 amps per day, and an automobile starter engine uses about 100.
Characteristics: It is measured by electric current and can be viewed as a low rate. To find it you divide volts by resistance. Amps have an attractive or repulsive force.

History: Amperes were originally defined asone tenth of the electromagnetic unit of current. Amperes law was created by Andre Marie Ampere. The law is "The magnetic field in space around an electric current is proportional to the electric current which serves as its source.It was named after Andre in 1881 in his honor.
Definition: A source of electricity that is given to anything that needs power.

Description: This is a power source that gives power to an electrical load. Without this there would be no power for any of the circuits which in a way effects every other concept in this project.
Power source
Examples: hydro electricity, wind power and batteries. Batteries supply voltage to currents.

Characteristics: The power source can be as small as a AAA battery or as big as a power plant, overtemperature and overcrrent can protect from damage but the power source often needs cooling because of too much heat
Power Source
History: Over time power sources have changed and evolved. They have become more advanced and some of them are more effincent Most power sources were discovered in the mid 1900.

Future: In the future sciencists are going to need to think of more advanced ways to have clean energy using renewable resources because fossil fuels are running out
Power source Diagram
Definition: This is something that converts stored chemical energy into electricity for the power source.

Description: They use conservation and are a major example of a power source

Examples:Batteries are used in clocks, cell phones and remotes. There are primary and secondary batteries. Primary are disposable and secondary are chargeable.

Characteristics:Batteries have one or more electrochemical cells. Batteries have ratings that represent the current (a,aa,aaa.) They are very popular for electrical uses.

History: In the late 1800's Alessandro Volta created the battery. Aroung the 1950's the alkaline battery was invented.

Future: Scientists think that in the future rhubarb will be used to power batteries and a less expensive metal will be used to make them. The size of batteries might be increased and used as major power sources.
Diagram Of A Battery
Separation of charge
Definition: The measure of a charges polarity. It is when charge from one object repels the charge of another object.

Description: Can also be known as static electricity, which is when space is built between opposite charge particles. It can help power sources because the seperation creates energy, friction, and heat which can create electricity

Potential Difference As It relates to Power source
Definition:This is the difference in electric potential between the first and last location.

Description: Electrical pressure differences between the ends of circuits.

As it relates: As the amount of wok being done by the power source goes up, so does the potential difference. Circuits are an example of this.
Transforming Energy
Definition: An energy conversion which is the change of one type of energy to another.

Description: This turns wind energy from power sources into energy that can be used for electricity.

Examples: a candle transfers light energy into heat energy. A toaster from light energy into heat energy. Also in pool there are energy transformations.
Transforming Energy
Characteristics: Energy can never be created or destroyed but is transformed. This energy an be transformed by radiation or heat. It can be transferred through conductors.

History: Scientists studied the natural transformations of energy and then duplicated it for natural electric power sources. The law of conservation of energy or transformation of energy.

Future: If scientists really found out how to transfer the energy into a good source of renewable energy without pollution it could be really important for the world because we are running out of fossil fuels.
Transforming energy
Definition: This is something that slows the movement of an electrical current.

Description: It limits the flow of electric current and can be used to provide a certain voltage to something. The more resistance the smaller the current and vise verse. As the current passes through a resistor the voltage will decrease.

Examples: Anything with an electric motor and an electric current and power source has resistors to slow the voltage. A lightbulb is an example of a resistor.

Characteristics: Resistors slow down the rate of electric current to the power source so it doesn't ruin it.
History: In 1827 Geog Ohm discovered resistance after studying different wires and then made ohms law which relates to resistance

Future: Resistors are expected to gain operating voltage and the wires will be denser creating a larger resistance for a stronger power source to come.
Potential Difference as it relates to Resistors
The higher the amount of resistance, the more potential energy there will be. Also the potential difference across an object is calculated using ohms law.
Definition:An electric force or potential difference that is expressed in volts.

Description:The electrical potential per unit charge in that point or location.

Examples: Solar panels have voltage batteries and diesel generators also have
Characteristics: Voltage is typically represented as a graph or a chart. It shapes the amount of electric current.

History: In the early 1800's Alessandro Volta discovered volts and then they were named after them. The Ohm looked further into it when he was working on Ohms law and discovered even more about volts.

Future: it is predicted that superconducting- high voltage power lines will be put in and will carry gigabytes
Diagram of voltage
Potential difference as it relates to voltage
The more potential difference the more voltage and the less potential difference the less voltage. It is the difference of electric potential between two points
Series circuit
Definition: A circuit that doesn't have different branches and the electric current reaches eery element of the circuit.

Description: The current through the circuit is the same throughout all of the elements unless there is a voltage drop because of a resistor but the voltage drops added up together equal the total voltage of the circuit.

Examples: A lamp has a series circuit consisting of a resistor and wires and amps and voltage. A tv is another example of that.

Characteristics: They have only one path for electric current to move through. There are also voltage drops and Almost everything in a house is connected to a series circuit but they aren't helpful for mass electricity.
Series Circuit
History: Volt discovered that he could create a steady flow of electricity to certain parts of a circuit and control the voltage with resistors in the 1800's.

Future: It is possible that one day series circuits might not be needed anymore because of parallel circuits are so much more efficient because of the constant voltage through the entire thing
Diagram of A series circuit
Parallel Circuit
Definition: A circuit with two or mre paths for an electric current to follow. Also known as a "closed circuit."

Description: Once the circuit is completed, both of the different paths meet up and form one path again.

Examples: Washing machines are a good example. And typically in houses each singular circuit is connected to a larger parallel circuit.

Characteristics: Has different paths for electricity to travel through and typically they power more than one thing.
Parallel Circuit
History: Volt also discovered how to direct the electric current in two different paths creating a parallel circuit as well as a series

Future: These also might be less common in the future because they are not built to support entire power grids and can be considered weak or faulty
Parallel Circuit
Electrical Generator
Definition: A device that converts electrical energy to mechanical energy

Description: A machine that converts mechanical energy into electricity that is usable for other machines to use.

Examples: Wind turbines, Hydro power turbines, and water wheels are all examples of this

Characteristics: Typically one of the main parts used to operate these machines are large turbines or large moving parts to extract energy from motion.

History: Before Electrical generators, electrostatic generators were used. In 1831 in London, England the electric generator was created by Michael Faraday.

Future: Electric generators are predicted to become smaller, made of renewable resources, and are going to have no pollution.
Electrical Generators
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