Electronic Principles
Current is

An imbalance of electrical charges
The force that causes electrons to flow
The number of free electrons in an atom
None of these
The flow of charged particles through a material

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

None of these
The total current in a parallel circuit is always less than the smallest amount of current
The amount of current flow through each branch of a parallel circuit can be different, depending on the resistance of each branch part and the amount of voltage applied to it
The total current in a parallel circuit is equal to the total voltage multiplied by the total resistance
The same current always flows through every part of a parallel circuit

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

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