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Presentation transcript:

Work Book / Text Book

Workbook p. 237 Textbook p. 459

Definitions

Direct Current: Is an electric current in which the electrons are continuously moving in the same direction

Alternating Current: Is an electric current in which the electrons move back and forth in a regular pattern

Differences between electricity and electronics

Characteristics Electricity Electronics Materials Used Conductors Metals & Alloys Copper Semiconductors Silicon Diodes Transistors Power of the Current Higher power Electrical Motor Low-intensity phone Size of Circuits Generally bigger Electric scooter Miniaturization Calculator

Battery Switch Light Bulb Current Direction Electrical Wire Switch Battery Light Bulb

An electrical function is… Is the role that a component plays in the control or transformation of electric current

A power supply is… Is the electrical function performed by any component that can generate or provide an electric current in a circuit. Examples: Battery Electrical outlet Photovoltaic cells

Conduction is… Is the electrical function performed by any component that can transmit electric current from one part of a circuit to another.

A printed circuit is… Is an electric circuit printed on a solid support called a circuit board.

Insulation is … Is the electrical function performed by any component that prevents an electric current from flowing.

Protection is … Is the electrical function performed by any component that can automatically cut current flow in the event of a power surge. Example: Fuses

A resistor is … Is a component designed to limit the flow of electrons through an electrical circuit.

Control & Transformation Work Book p. 243 Text Book p. 469

Definitions

A Closed Circuit is… Is a circuit in which electric current flows in a loop

An Open Circuit Is a circuit in which electrical current cannot flow in a loop

Control is… The electrical function performed by any component that can open and close a circuit

Transformation of Energy Is the electrical function performed by any component that can convert electrical energy into another form of energy

Component Form of Energy Incandescent Light Bulb Luminous Energy Heating Elements Thermal Energy Piezoelectric Crystals Mechanical Energy Sound Energy Electromagnets Magnetic Energy

Homework pg. 237-244 NOT pg. 242 # 8,9