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

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

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

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

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