Electronic Principles
If a load resistance is 1 kW, a stiff current source has a resistance of

Less than 100 k Ohm
At least 10 Ohm
More than 100 k Ohm
Less than 10 Ohm
None of these

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

Primary-cell batteries can be recharged and used many times, whereas secondary-cell batteries cannot be properly recharged
None of these
Primary-cell batteries must be recharged at a much slower rate that secondary-cell batteries
Secondary-cell batteries can be recharged and used many times, whereas primary-cell batteries cannot be properly recharged
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

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Electronic Principles
When a series RLC circuit is operating at its resonant frequency:

inductive reactance is greater than the capacitive reactance
None of these
the difference between inductive and capacitive reactance is equal to the resistance
capacitive reactance is greater than the inductive reactance
inductive reactance is equal to the capacitive reactance

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