Electronic Principles
Which one of the following statements is true for the voltages in a series RL circuit?

The voltage always has the same amplitude and phase for every part of the circuit
None of these
The total voltages is equal to the sum of the voltages across the resistance and inductance
The total voltage is less than the sum of the voltages across the resistance and inductance
The total voltage lags the total current by less than 90

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Electronic Principles
The south pole of a magnet is the one:

that would be attracted to the earths north magnetic pole
that would be repelled by the north pole of another magnet
None of these
that has its molecules arranged in a random pattern
that would be attracted to the earth's south magnetic pole

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

An insulator allows current to flow much easier than a conductor does
A conductor allows current to flow much easier than an insulator does
None of these
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

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