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

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

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Electronic Principles
The dielectric constant of a material is a measure of:

the amount of opposition to the current flow
how well the material concentrates electrostatic lines of force
the amount of voltage it can withstand before breaking down
None of these
how well the material concentrates magnetic lines of force

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Electronic Principles
Which one of the following statements is true for the impedance of a series RC circuit?

The impedance is greater than the sum of the resistance and capacitive reactance
The impedance is less than the sum of the resistance and capacitive reactance
The impedance is greater than either the resistance or capacitive reactance but less than their sum
The impedance is equal to the sum of the resistance and capacitive reactance
None of these

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