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

base current
collector current
supply current
emitter current
None of these

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Electronic Principles
The north pole of a magnet is the one:

that has its molecules arranged in a random pattern
that would be attracted to the earth's north magnetic pole
that would be attracted to the earth's south magnetic pole
None of these
that would be repelled by the south pole of another magnet

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