Electronic Principles
The direction of electron current flow is:

from positive to negative
None of these
from right to left
from negative to positive
from neutral to positive

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Electronic Principles
Which one of the following phrasers best describes flux density?

None of these
The force that maintains lines of force
The concentration of lines of magnetic force
The opposition to a build-up of magnetic fields
The rate of change of the number of lines of magnetic force

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Electronic Principles
Which one of the following phrases most accurately describes a purely inductive circuit?

Resistances provide the only opposition to current flow
None of these
The ac voltage lags the current by 90 degree
Inductive reactance provides the only opposition to current flow
Combinations of resistance and inductive reactance provide any opposition to current flow

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Electronic Principles
When a series RLC circuit is operating at its resonant frequency:

the difference between inductive and capacitive reactance is equal to the resistance
capacitive reactance is greater than the inductive reactance
None of these
inductive reactance is equal to the capacitive reactance
inductive reactance is greater than the capacitive reactance

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