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3. WHY ARE WE USING COPPER MATERIAL IN CABLES?
Every Material Offers Some Resistance or Opposition to The Flow of Electric Current Through it. Good Conductors
Such as Copper and Aluminum Offer Very Little Resistance. Poor Conductors or Insulator Such as Glass, Wood
and Paper Offer a High Resistance to Current Flow.
The Size and Type of Materials of the Wire in an Electric Circuit are chosen to keep the electrical resistance as low
as possible. In this way, Current can flow easily through the conductors. Temperature also affects the resistance of
electrical conductors to some extent. In most conductors the resistance increases with temperature. The relative
resistance of several conductors of the same length and cross section metals are arranged in order of ascending
resistance.
COPPER   108
GOLD    140
ALUMINUM   180
PLATINIUM     700
LEAD      1350