Electronic Principles
Molecule is

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
None of these
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

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Electronic Principles
Voltage is

The number of free electrons in an atom
The smallest electrically charged particle
The flow of charged particles through a material
Trie force that causes electrons to flow
None of these

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

The total current leads the total voltage by less than 90
The total current is equal to the sum of the currents through the resistance and inductance
The current always has the same amplitude and phase for every part of the circuit
The total current is less than the sum of the currents through the resistance and inductance
None of these

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

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

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