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Electricity and Magnetism - Coggle Diagram
Electricity and Magnetism
Chapter 1: Electricity
Chapter 1.2 Charges can move from one place to another
Static charges have potential energy
Electric Potential Energy
Electric Potential
Electric Potential = the amount of electric Potential energy per unit charge at a certain position in an electric field
volt = 1 Joule of energy per colomb of charge
Charge Movement
Lightning
Materials Affect change movement
Conductors In Insulators
conductor = a material that allows an electric charge to pass through it
insulator = A material that doesn't easily allow a charge to pass through
Resistance
resistance = is the property of a material that determines how easily a charge can move through it
ohms - Electrical Resistance that is measured in units which are called ohms
Superconductors
Grounding
Grounding means providing a harmless low resistance path a ground used for electricity to follow
Chapter 1.1: Materials can become electrically charged
Technology uses static electricity
Electric charge is a property of matter
electric charge = a property that allows an object to exert an electric force on another object without touching it
electric field = the space around a particle through which an electric charge can exert this force
Static charges are caused by the movement of electrons
Charging by contact
How Materials Affect Static Charging
Charging by Induction
Induction = The build up of a charge without direct contact
Charge Polarization
Technology uses static electri
Technology uses static electricity
1.3 Electric charge can flow continuosly
electric current: another name for flow of charge
Current, Voltage, And Resistance
amphere: thie standard unit of measure for current
Ohm's law, Current = Volage/Resistance
Measuring Electricity
Electric cells supply electric current
electric cells = produces electric using chemical physical properties
Electrochemicals Cells
Solar Cells
Circuts and electrons
Charge needs a continuous path to flow
Electric charge flows in a loop
curcit= a closed path were continuous charge can flow
Parts of a circut
Open and closed circuts
Current follows the path of the least resistance
short circuts = an unintended path connecting 2 parts of a circut
Grounding a Circut
Safety devices control current
how fuses work
Other safety devices
Circuts make electric current useful
Circuts are constructed for specific purposes
Circuits can have multiple paths
Series Circut = a circut which current follows a single path
Parallel circuits current flows more t
Circuts convert electrical energy into other forms of energy
Electronic technology is based on circuits
Electronics use coded info
electronic is a device that uses electric current
Binary Code= A coding system consisting of 2 choices
Digital Info
Analog to Digital = analog information is represented in a continuous but varying form
Computer circuts process digital Info
computer is an electronic device that processes digital Info
Integrated circuts
Personal Computers
Computers can be linked with other computers
The origin of the internet
Internet t
Magnetism
Magnetism is a force that acts at a distance
Magnest attract and repl each other
magnet = is an object that attracts a material
Some materials are magnetic
Inside Magnetic Mtaerials
Magnetic domain is a group of atoms whose magnetic field are aligned
Temporary and Permanent Magnets
Earth is a magnet
Earth's magnetic field
Magnetism and the Atmosphere
Current can produce magmetism
An electric current produces a magnetic field
Electromagnetism
Electromagnetism is a magnetism that results from an electric current generally consisting of moving electrons
Making an Electromagnet
Electromagnet is a magnet made pH a peice of iron or stell in a cooil of wire
Uses of electromagnets
Motors use electromagnets
Motors
Uses of MOtors
Magnetism can produce a current
Magnets are used to generate an electric current
Generating an electric current
A generator is a device that converts the energy of motion or kinetic energy into electrical energy
Direct and Alternating currents
A direct current is electric charge that flows in one direction
An alternating current is a flow of electric charge that reverses direction
Magnets are used to control voltage
a transformer is a device that increases or decreases voltage
Generators supply electrical energy
Generators provide most of the world's electrical energ
electric power is the rate at which electrical energy is generated from another source of energy
Electric power can be measured
Watts and Kilowatts
A watt is the unit of measurement for power
A kilowatt is the unit of power equal to 1000 watts
Calculating energy use
a kilowatt-hour is the measurement for energy usage