Electronic Principles
The direction of electron current flow is:

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

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Electronic Principles
Which one of the following statements most accurately describes the nature of inductive reactance?

None of these
Inductive reactance is another term for counter emf
Inductive reactance is a force that tends to overcome the effects of counter emf
Inductive reactance is an opposition to current flow in ac circuits
Inductive reactance is an opposition to current flow in dc circuits

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Electronic Principles
One henry of inductance is defined as:

the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second
the amount of counter emf required to reduce a current to 1 A
the number of turns of wire in an inductor multiplied by the amount of current flowing through it
None of these
the amount of inductance required to change the frequency of a current by 1 Hz

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