Electronic Principles
Which one of the following statements applies to common auto batteries?

Auto batteries are secondary wet-cell batteries
Auto batteries are primary wet-cell batteries
Auto batteries are primary dry-cell batteries
None of these
Auto batteries are secondary dry-cell batteries

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

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