Electronic Principles
The dielectric constant of a material is a measure of:

how well the material concentrates magnetic lines of force
the amount of opposition to the current flow
None of these
how well the material concentrates electrostatic lines of force
the amount of voltage it can withstand before breaking down

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Electronic Principles
What is the primary difference between primary and 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 must be recharged at a much slower rate that secondary-cell batteries
Primary-cell batteries can be recharged and used many times, whereas secondary-cell batteries cannot be properly recharged
Secondary-cell batteries can be recharged and used many times, whereas primary-cell batteries cannot be properly recharged

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Electronic Principles
Which one of the following statements applies to common auto batteries?

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

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