Electronic Principles
Voltage is

The number of free electrons in an atom
None of these
The smallest electrically charged particle
Trie force that causes electrons to flow
The flow of charged particles through a material

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Electronic Principles
What is the difference between a conductor and an insulator?

An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all
An insulator allows current to flow much easier than a conductor does
The difference between conductors and insulators depends on how they are used
A conductor allows current to flow much easier than an insulator does
None of these

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Electronic Principles
Which one of the following phrasers best describes flux density?

The rate of change of the number of lines of magnetic force
The force that maintains lines of force
The concentration of lines of magnetic force
The opposition to a build-up of magnetic fields
None of these

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Electronic Principles
Doubling the operating frequency of a purely inductive circuit:

has no effect on the current through the inductors
cuts the current through the inductors one-half
None of these
doubles the amount of current through the inductors
increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit

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