Electronic Principles
In a pure inductor:

ac current and voltage are exactly in phase
None of these
ac current is converted to dc voltage
ac current lags the voltage by 90 degree
ac current leads the voltage by 90 degree

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Electronic Principles
Which one of the following statements applies to common, non-rechargeable flashlight batteries?

Common flashlight batteries are secondary wet-cell batteries
Common flashlight batteries are secondary dry-cell batteries
Common flashlight batteries are primary dry-cell batteries
Common flashlight batteries are primary wet-cell batteries
None of these

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