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
Waveforms are graphs that show:

None of these
frequency on the vertical axis and amplitude on the horizontal axis
the passage of time on the vertical axis and amplitude on the horizontal axis
amplitude on the vertical axis and the passage of time on the horizontal axis
amplitude on the vertical axis and frequency on the horizontal axis

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Electronic Principles
What is a free electron?

An electron that has been freed from its parent atom
An electron that has no electrical charge
An electron that costs nothing
An electron that has twice the amount of charge of a normal electron
None of these

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Electronic Principles
Which one of the following phrases most accurately describes a purely inductive circuit?

Inductive reactance provides the only opposition to current flow
Resistances provide the only opposition to current flow
The ac voltage lags the current by 90 degree
None of these
Combinations of resistance and inductive reactance provide any opposition to current flow

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