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Electronic Principles

Electronic Principles
The basic unit of measurement for current is the:

volt
watt
ampere
None of these
ohm

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Electronic Principles
A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns?

1000 A
0.41666666666667
0.1 A
100 A
None of these

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Electronic Principles
The basic unit of measurement for resistance is the:

ohm
ampere
None of these
watt
volt

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Electronic Principles
The equivalent of 1 micro A is:

None of these
10000A
one million amperes
1000 A
one-millionth of an ampere

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Electronic Principles
A device that converts thermal energy to electrical energy is called a:

None of these
thermocouple
piezoelectric devices
solar cell
chemical cell

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

base current
collector current
None of these
supply current
emitter current

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