Electronic Principles
Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff?

200 k Ohm or more
20 km or less
20 k Ohm or more
200 k Ohm or less
None of these

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

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

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