Electronic Principles
The current gain of a transistor is defined as the ratio of the collector current to the

emitter current
None of these
collector current
base current
supply current

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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
Like magnetic poles repel, while unlike poles attract
None of these
Current flowing through a conductor generates a magnetic field

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Electronic Principles
Which one of the following statements is true for current flowing in a series circuit?

The total current in a series circuit is equal to the sum of the currents flowing through the individual components in the circuit
The amount of current flow through each part of a series circuit can be different, depending on the resistance of each part and the amount of voltage applied to it
The total current in a series circuit is equal to the total voltage multiplied by the total resistance
None of these
The same current flows through every part of a series circuit

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