Electronic Principles
A basic capacitor is composed of:

None of these
two dielectrics separated by a conductor
two coils separated by a dielectric
two conductors separated by a dielectric
two coils separated by a conductor

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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
Current flowing through a conductor generates a magnetic field
Like magnetic poles repel, while unlike poles attract

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