Principles of Technology

Electrical Force (1:3)

Vocabulary (pages 71-76)


Voltage source




Control element


Electrical load


Diagram a general electrical circuit




Alternating current and Direct current




How does a dry-cell battery work?


How does a wet-cell battery work?


How is a battery recharged?


Electrode (cathode and anode)


How are batteries hooked in series (so they work)?


What will happen if they are connected the wrong way?


Frequency and Hertz


Describe an atom




Describe the 3 ways of producing a voltage difference



What happens if there is no voltage difference?


Diagram a simple "series" circuit with 2 loads Diagram a simple "parallel" circuit with 2 loads




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