Question

_ cables are commonly used for telephone connection .
A) Co-axial, B) Twisted Pair, C) Fiber Optic, D) Power Cables .

Answer 1

Hello Dear!  

Q. ______ cables are commonly used for telephone connection.

(A) Co - axial (B) Twisted Pair (C) Fibre Optic (D) Power Cables

Answer : Option (B) Twisted Pair

   Extra information about twisted pairs cable :

 -- A twisted pair wire consists of two insulated thin copper wires, about 1 mm thick.

-- The wires are in a helical form, as like the DNA molecule, it is because both parallel wires constitues a fine antenna and when the wires are twisted it cancel out the waves from different twist and therefore the wires radiates less effectively.

 -- Twisted pair also sometimes referred to unshield twisted pair (UTP), are used commonly in the local telephone system.