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Simple Circuits
41 questions By Tony R. Kuphaldt
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Question 10 of 41
Identify the following types of switches, according to their style of actuation (how each switch is physically operated):
Reveal answer
Notes:Students will probably want to know how the temperature switch actually works. Be prepared to explain how bi-metallic elements may be used to actuate small mechanisms like switches, or challenge the students to research this on their own.
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Question 11 of 41
What type of switch is represented by this schematic symbol?
Reveal answerThis is a selector switch of the break-before-make variety.
Notes:Selector switches are very, very common in electrical and electronic circuits, for selecting different machine functions.
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Question 12 of 41
What positions do the switches have to be in for the light bulb to receive power?
Reveal answerFor the light bulb to be energized, both switches must either be in the “up” position, or in the “down” position.
Notes:This wiring arrangement (“three-way” switches) is commonly used in residential lighting, for controlling a light bulb in a hallway with switches at either end. Once students relate this circuit to personal experience, it usually makes a lot more sense to them.
