Please enable JavaScript.
Coggle requires JavaScript to display documents.
Electricity and Magnetism - Coggle Diagram
Electricity and Magnetism
Electricity
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 per unit charge at a certain position in an electric field
Volt: the measurement of electric potential; one volt is equal to one joule of energy per coulomb of charge
Charge Movement
Lightning
Materials affect charge movement
Conductors and Insulators
Conductor: A material that allows an electric charge to pass through it easily
Insulator: A material that does not easily allow a charge to pass through it
Resistance
Resistance: the property of a material that determines how easily a charge can move through it
Ohms: What electrical resistance is measured in
Superconductors
Grounding
Grounding: Proving a harmless, low-resistance path-a ground-for electricity to follow
Electric current is a flow of charge
Electric charge can flow continuously
Electric current: another name for flow of charge
Current, Voltage, and Resistance
Ampere(amp): the amount of charge that flows past a point per unit of time
Ohm's Law
Ohm's Law: current = voltage/distance
Measuring Electricity
Electric cells supply electric current
Electric cells: produces the electric current using the chemical or physical properties of different materials
Electrochemical Cells
Primary Cells produce electric current through chemical reactions that continue until one or more of the chemicals is used up
Storage Cells: some batteries that produce current through chemical reactions that can be reversed inside the battery
Solar Cells
Materials can become electrically charged
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 that can expert this force
Static charges are caused by the movement of electrons
Static Charge: a buildup of electric charge in an object caused by the presence of many particles with the same charge
Charging by Contact
How Materials Affect Static Charging
Charging by Induction
Induction: The buildup of a charge without direct contact
Magnetism
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: provides the electric potential for charge to flow through the circuit
Conductor: forms a connection from the voltage source to the electrical device and back
Switch: a part of a Circuit designed to break the closed part of charge
Electrical Device: any part of the circuit that changes electrical energy into another form of energy.
Circuits make electric current useful
Electronic technology is based on circuits
Circuits and Electronics