You can weld with E6013 using any polarity. Use DC - or AC for thin sheet metal. Use AC if you have arc blow problems.
DC - has the lowest penetration
DC + has the most penetration
AC splits the difference
E6013
E
The E6013 welding electrode is a versatile, all-purpose electrode with a coating that provides smooth arc characteristics and good penetration. It is commonly used for general welding applications on mild steel and is known for producing clean and minimal spatter welds. The E6013 electrode can be used with both AC and DC welding machines.
Knowing the polarity of transformers is important if they are to be connected in parallel.
E6013 is a mild-steel, all position, general-purpose welding electrode (rod).
borex
-- negative polarity -- positive polarity
Resistors do not have a polarity. BY DEFINITION, a resistor is a device that follows Ohms law, and does so regardless of the polarity in which it is inserted into a circuit. Manufacturers of resistors do all they can to make their resistors follow that definition. One way to make a resistor have no polarity is to build it so that it is mechnically symmetrical about its two leads. Doing so will ensure that it will also be electrically symmetrical, and thus non-polarized
The polarity is a vector quantity. The resultant of the polarity of bonds determines the polarity of the molecule. In CO2 there is polarity between the two C-O but the polarity is equal and opposite in direction so CO2 doesn't have polarity. If the polarity of bonds is not cancelled then the polarity remains in the molecule.
Polarity
1-structure of molecule (which has to be separated), 2-polarity of molecule and 3-polarity of solvent used. In this case benzene or toluene as a solvent may be selected.
Reversing polarity ,changes the rotation of the device you are changing polarity on.