Electronic Principles
Voltage is

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

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

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

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Electronic Principles
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?

The voltage reverses polarity periodically
The voltage remains at one polarity but changes value periodically
The voltage causes current to flow in two directions at the same time
The voltage remains at one polarity and at a steady level
None of these

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Electronic Principles
Which one of the following is a statement of KirchhofFs voltage law?

The algebraic sum of voltages entering and leaving a point is equal to zero
None of these
The algebraic sum of voltages in a loop is equal to zero
The total voltage in a parallel circuit is less than the value of the smallest voltage
The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it

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