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Q: What is the capacitance of a 1m long hifi cable where the centre conductor is 1mm in diameter and the shield is 5 mm in diameter?
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What is function of coaxial?

coaxial cable has a solid copper or copper-clad-steel centre conductor surrounded by a non-conductive dielectric insulating material. The dielectric is surrounded by foil shield/s and/or copper braid/s which form the outer conductor and also shield against electromagnetic interference (EMI). The outer conductor/shield is encased in a PVC jacket.


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Why does security alarm systems use cables with one conductor Aluminum and one Copper?

Both conductors are copper. One is just electroplated so it looks silver. This is so you can know which conductor is which when you hook them up. The copper-colored conductor is traditionally used as the positive, or plus wire. The silver-colored wire is used for the negative or minus wire. Some cables use a foil shield. The shield is mylar (polyester) coated with aluminum. The shield is not really one of the conductors, it is only used to drain away interfering signals before they reach the inner conductors, so it need not be a super good conductor. Aluminum is used for the foil shield partly because it is lightweight, but mostly because it's much cheaper than copper.


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What is function of coaxial cable?

coaxial cable has a solid copper or copper-clad-steel centre conductor surrounded by a non-conductive dielectric insulating material. The dielectric is surrounded by foil shield/s and/or copper braid/s which form the outer conductor and also shield against electromagnetic interference (EMI). The outer conductor/shield is encased in a PVC jacket.


What are the uses of coax cable in the world of technology?

Coaxial cable, or coax, is an electrical cable with an inner conductor surrounded by a flexible, tubular insulating layer, surrounded by a tubular conducting shield. The term coaxial comes from the inner conductor and the outer shield sharing the same geometric axis. Coaxial cable was invented by English engineer and mathematician Oliver Heaviside, who patented the design in 1880.[1]