Electronic Principles
Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff?

5 Ohm
6 Ohm
None of these
50 Ohm or more
100 Ohm

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Electronic Principles
Molecule is

A atom that has an excessive number of electrons in its outer orbit
None of these
The smallest particle of a substance that retains the properties of that substance
A atom that has a shortage of electrons in its outer orbit
A atom that flows whenever there is an imbalance of electrical charges between two points

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Electronic Principles
Which one of the following principles best describes the basic operation of an electromagnet?

Like magnetic poles attract, while unlike poles repel
Current is induced in a conductor that is moving through a magnetic field
None of these
Like magnetic poles repel, while unlike poles attract
Current flowing through a conductor generates a magnetic field

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Electronic Principles
A farad is defined as the amount of capacitance necessary for:

changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing
causing an ac phase shift greater than 90 degree
None of these
storing 1 V for 1 second
dissipating 1 W of power

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