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 applies to common auto batteries?

Auto batteries are primary dry-cell batteries
Auto batteries are secondary dry-cell batteries
Auto batteries are primary wet-cell batteries
None of these
Auto batteries are secondary wet-cell batteries

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Electronic Principles
The total impedance of a parallel RLC circuit:

None of these
is maximum at the resonant frequency
always increases as the applied frequency increases
always decreases as the applied frequency increases
is equal to the sum of the values of resistance, inductive reactance and capacitive reactance

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