Electronic Principles
Which one of the following is a statement of KirchhofFs voltage law?

None of these
The total voltage in a parallel circuit is less than the value of the smallest voltage
The algebraic sum of voltages entering and leaving a point is equal to zero
The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it
The algebraic sum of voltages in a loop is equal to zero

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

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

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