Electronic Principles
Voltage is

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

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

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

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Electronic Principles
Which one of the following phrases best describes residual magnetism?

The circular magnetic field that surrounds a conductor carrying a current
Magnetism that remains in the core of an electromagnet after the current through the coil is turned off
The force of attraction between the poles of a permanent and temporary magnetic field
The amount of magnetic flux that is not confined to the core material of an electromagnet
None of these

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