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Unit 3

Electricity and Magnetism

electric charge a property that leads to electromagnetic interactions between the particles that make up matter
static electricity the buildup of electric charge on an object
electrical conductor material through which charges can move freely
electrical insulator material through which charges cannot move easily
semiconductor special class of materials that conduct electric charges better than electrical insulators but not as well as electrical conductors
electric current the rate of flow of electric charges
voltage the amount of work required to move each unit of charge between two points
resistance the opposition to the flow of electric charge
electric circuit a complete closed path through which electric charges can flow
series circuit all parts are connected in a row that forms one path for the electric charges to follow
parallel circuit electric charges have more than one path that they can follow
magnet material that attracts iron or objects made of iron
magnetic force a push or pull created by two magnets
magnetic pole magnet ends
magnetic field the are surrounding a magnet where magnetic forces can be detected
electromagnetism when electric currents and magnetic fields interact with each other
solenoid a coil of wire that carries an electric current and produces a magnetic field
electromagnet solenoid wrapped around an iron core
electric motor changes electrical energy into mechanical energy
electromagnetic induction using a magnetic field to create an electric current in a wire
transformer uses induction to increase or decrease the voltage of alternating current
electric generator use induction to change mechanical energy into electrical energy
electronic device able to control the flow of electrons using integrated circuits
integrated circuit a single, tint chip of specially treated silicon containing many circuit parts
analog signal signals that change continuously in a given range
digital signal a sequence of separate values
computer an electronic device that performs tasks by following instructions given to it
Created by: 18vandasj1022