2006-08-24 18:23:53 · 2 answers · asked by dinesh 1 in Education & Reference ➔ Higher Education (University +)
Wireless transmission works on transmission of waves - radio waves, microwaves, etc... which will travel thru air.
Where as electricity cannot travel thru air (air is an insulator) - it requires an medium(conductor) to conduct the same.
http://en.wikipedia.org/wiki/Electricity#Electric_current
An electric current is a flow of electric charge, and its intensity is measured in amperes. Examples of electric currents include metallic conduction, where electrons flow through a conductor such as a metal wire, and electrolysis, where ions (charged atoms) flow through liquids
2006-08-24 18:32:57 · answer #1 · answered by Crabby 4 · 0⤊ 0⤋
transmission of voltage and current always require wire. The higher the grade of wire the faster the transmission.
2006-08-25 01:27:42 · answer #2 · answered by wunderkind 4 · 0⤊ 0⤋