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

The ac voltage leads the current by 90 degree
None of these
Capacitive reactance provides the only opposition to current flow
Resistances provide the only opposition to current flow
Combinations of resistance and capacitive reactance provide any opposition to current flow

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Electronic Principles
What is a negative ion?

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

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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 an opposition to current flow in dc circuits
Inductive reactance is an opposition to current flow in ac circuits
Inductive reactance is a force that tends to overcome the effects of counter emf

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