Electronic Principles
Which one of the following devices is most often used for measuring opposition to current flow in a circuit?

Voltmeter
None of these
Ohmmeter
Wattmeter
Ammeter

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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
None of these
An electron that has twice the amount of charge of a normal electron

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