Electronic Principles
Voltage is

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

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

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

None of these
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 leads the total voltage by less than 90
The total current is less than the sum of the currents through the resistance and inductance

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