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Electricity & Magnetism - Coggle Diagram
Electricity & Magnetism
ELECTRICITY
Materials can become electrically charged
Electric charge is a property of matter
Electric field:
The space around a particle through which an electric charge can exert this force.
Electric charge:
a property that allows an object to exert an electric force on another object without touching it
Static charges are caused by the movement of electrons
charging by contact
How materials affect static charging
charging by induction
Induction:
The buildup of charge without direct contact
Charge polarization
Technology uses static electricity
ELECTRICITY
charges can move from one place to another
static charges have potential energy
electric potential
Electric potential:
The amount of electric potential energy per unit charge at a certain position in an electric field.
Charge movement
lightning
Electric potential energy
Materials affect charge movement
conductors and insulators
resistance
Ohms:
The units in which electrical resistance is measured
superconductors
grounding
grounding:
Providing a harmless, low resistance path for electricity to follow
ELECTRICITY
Electric current is a flow of charge
Electric charge can flow continuously
Current, Voltage, and resistance
Ampere:
Standard unit of measure for current
Ohms law:
current = voltage/resistance
Measuring electricity
Electric current:
Flow of charge
electric cells supply electric current
electric cell:
produces electric current using the chemical or physical properties of different properties.
Electrochemical Cells
primary cells
storage cells
Solar Cells
CIRCUITS AND ELECTRONICS
Charge needs a continuous path to flow
Electric charge flows in a loop
Circuit:
a closed path through which a continuous charge can flow
The parts of a circuit
Voltage source
Conductor
Switch
Electrical device
Open and closed circuits
Current follows the path of least resistance
Short circuits
Short circuits:
An unintended path connecting one part of a circuit with another
Functioning Circuit
Short circuit
Grounding a circuit
Safety devices control current
How fuses work
Other safety devices
CIRCUITS AND ELECTRONICS
Circuits make electric current useful
Circuits are constructed for specific purposes
Circuits can have multiple paths
Series Circuits
A circuit in which current follows a single path
parallel circuits:
a circuit in which current follows more than one path
Circuits convert electrical energy into other forms of energy
CIRCUITS AND ELECTRONICS
Electronic technology is based on circuits
Electronics use coded information
Electronic
Binary code: A coding system consisting of two choices
Digital information
Digital
Analog to Digital
Analog information
: information that is represented in a continuous but varying form.
Computer circuits process digital information
computer
Integrated Circuits
Personal Computers
Input
Storage
Processing
Output
Computers can be linked with other computers
The origin of the internet
The internet today
Magnetism
Magnetism is a force that acts at a distance
Magnets attract and repel other magnets
magnetism
magnetic poles
magnetic fields
some materials are magnetic
inside magnetic materials
earth is a magnet
earths magnetic field
magnetism and atmosphere
motors
lines of motors
magnetism can produce current
magnets are used to generate an ek electric currwnt
magnets are used to control voltex
current can produce magnetism
an electric current produces a magnetic field
electromagnetism
making an electromagnet
uses of electromagnets
motors use an electromagnet
generators supply electrical energy
generators provide most of the worlds wnwergy
electric power can be measured
watts and lkilo watts
calculating energy use