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Electronic Principles

Electronic Principles
How much current flows through a 0.02 micro F capacitor that is operating from a 12-V ac, 100-Hz source?

None of these
0.995 mA
2.02 A
0.151 mA
157 raA

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Electronic Principles
The net charge of a neutral copper atom is

None of these
4
-1
1

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Electronic Principles
Doubling the diameter of the coil in an inductor:

multiplies the value of inductance by two
None of these
reduces the value of inductance by one-fourth
multiplies the value of inductance by four
reduces the value of inductance by one-half

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Electronic Principles
At room temperature a conductor has low many holes?

less than the free electrons
many
None of these
Only those produced by thermal energy
Same number as free electrons

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Electronic Principles
The value of a capacitor can be made larger by:

increasing the voltage applied to the plates
increasing the area of the plates
decreasing the area of the plates
None of these
increasing the frequency of the applied voltage

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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?

100 A
None of these
1000 A
0.1 A
0.41666666666667

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