Electronic Principles
A typical light switch in your home is a:

rotary switch
toggle switch
knife switch
None of these
momentary push button switch

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Electronic Principles
Which one of the following statements most accurately reflects the nature of ac power?

None of these
The current in an ac circuit flows in one direction at a steady level
The current in an ac circuit flows in two directions at the same time
The current in an ac circuit changes direction periodically
The current in an ac circuit flows in one direction, but changes value periodically

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