Electronic Principles
Which one of the following kinds of materials has the lowest permeability?

A diamagnetic material
A feiTomagnetic material
All of these
None of these
A paramagnetic material

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Electronic Principles
Voltage is

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

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Electronic Principles
What is a negative ion?

An atom that contains more protons than neutrons
An atom that contains more protons than electrons
An atom that contains more electrons than neutrons
None of these
An atom that contains more electrons than protons

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