A) teflon (or) polyethylene
B) glass or mica
C) a gaseous medium
D) glass
E) mica
Correct Answer: A
Solution :
Co-axial cable is an electrical cable consisting of a round conducting wire, surrounded by an insulating spacer, surrounded by a cylindrical conducting sheath. Physical separation between inner conductor and outer shielding is maintained by spacers usually made out of tough solid plastics like teflon and nylon.
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