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

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

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Electronic Principles
Molecule is

A atom that has a shortage of electrons in its outer orbit
A atom that has an excessive number of electrons in its outer orbit
None of these
A atom that flows whenever there is an imbalance of electrical charges between two points
The smallest particle of a substance that retains the properties of that substance

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Electronic Principles
Which one of the following statements is true for resistance in a parallel circuit?

The total resistance of a parallel circuit is equal to the total voltage
None of these
The total resistance of a parallel circuit is always less than the value of the smallest resistance
The total resistance in a parallel circuit is equal to the average value of the individual resistances
The total resistance is equal to the sum of the individual resistances in a parallel circuit.

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