Electronic Principles
What is a free electron?

None of these
An electron that has been freed from its parent atom
An electron that costs nothing
An electron that has twice the amount of charge of a normal electron
An electron that has no electrical charge

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Electronic Principles
What is the primary difference between primary and secondary cell batteries?

Secondary-cell batteries can be recharged and used many times, whereas primary-cell batteries cannot be properly recharged
Primary-cell batteries must be recharged at a much slower rate that secondary-cell batteries
None of these
Primary-cell batteries use chemical cells, whereas secondary-cell batteries use an alternative energy source, such as thermal or magnetic energy, to supplement their outputs
Primary-cell batteries can be recharged and used many times, whereas secondary-cell batteries cannot be properly recharged

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

The total current is less than the sum of the currents for the resistance and capacitance
The current always has the same amplitude and phase for every part of the circuit
None of these
The total current is greater than the sum of the currents for the resistance and capacitance
The total current is equal to the sum of the currents for the resistance and capacitance

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