Electronic Principles
What is a negative ion?

An atom that contains more protons than electrons
An atom that contains more electrons than neutrons
An atom that contains more protons than neutrons
None of these
An atom that contains more electrons than protons

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

Inductive reactance is an opposition to current flow in ac circuits
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 dc circuits
None of these

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Electronic Principles
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?

The voltage remains at one polarity but changes value periodically
The voltage remains at one polarity and at a steady level
The voltage causes current to flow in two directions at the same time
None of these
The voltage reverses polarity periodically

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