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Electronic Principles

Electronic Principles
The equivalent of 1 micro A is:

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

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Electronic Principles
How much current flows through a 60-W light bulb that is operating at 120 V?

0.083333333333333
7200 A
0.5A
180 A
None of these

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Electronic Principles
The rotating coil of wire in an electric motor is called the:

armature
commutator
None of these
loop
brush

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Electronic Principles
How many protons does the nucleus of a silicon atom contain?

48
29
None of these
14
4

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Electronic Principles
Doubling the operating frequency of a purely capacitive circuit:

None of these
cuts the total current by one-half
thrice the amount of total current
has no effect on the total circuit current
doubles the amount of total current

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Electronic Principles
The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current?

7.8 µA
10.3 µA
7.75 µA
None of these
14.8 µA

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