i dont know dont care
In electrical engineering there are many types of symbols used to notate devices. These include symbols for polarity, switches, diodes, and batteries.
It depends on the type of electrical symbols. There are safety and warning symbols as well as symbols for identifying parts and their polarity. The symbols are needed for maintenance for proper safety, part identification, and to know how to hook up things. It's much more convenient to have a symbol that everyone recognizes for, say, a resistor, than to glue a resistor onto the wiring diagram.
they do not have any electrical property that is polarity sensitive
It depends on the type of electrical symbols. There are safety and warning symbols as well as symbols for identifying parts and their polarity. The symbols are needed for maintenance for proper safety, part identification, and to know how to hook up things. It's much more convenient to have a symbol that everyone recognizes for, say, a resistor, than to glue a resistor onto the wiring diagram.
Polarity
tanga
1996
because they operate on DC
Electrical symbols are used in electrical wiring diagram, signage on the electrical devices and motors
Electrical safety symbols warn of possible hazards. Information and explanation can be found online at websites such as Electrical Safety Forum and Wise Geek.
Commonly used electrical symbols on blueprints include those for power sources, switches, outlets, lights, and various other electrical components. These symbols are standardized to represent different elements in electrical systems for clear communication and understanding among professionals in the field.
In chemistry polar is related to the polarity of molecules - the distribution of electrical charges.