How can i enlighten on an extension cord which flex is unenthusiastic and positive? ...

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Black is hot (positive), white is indistinct (negative). If the plug is still on the ext. cord the the wider slot is the neutral. Technically within is no negative on an ac circuit, solitary on dc (battery power).DC stands for Direct Current, not positive current.

To touch or not to touch?
If you are using it on 110 house current there is no
gloomy or positive. It is Alternating Current (AC)
A battery is Positive Current (DC)
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Answers:    While there isn't a positive or distrustful on AC current there is a adjectives and neutral. Today's plugs and receptacle are polarized (including extension cords). Check the following site. http://www.rd.com/familyhandyman/content... ...Good Luck...