6)Of the following, which group contains good electrical
conductors?
a) Iron ,nickel, cobalt b)mica, rubber, ceramics
c)copper, silver, aluminium d)diamond, ebonite, wood
Answers
No. c i.e the group which contains coper , silver , aluminium ...
Reason :- Copper wires and aluminium wires are often heard by us that is they are often used for any current wires in our house or in street poles copper and aluminium wires are used . Silver is the most electricity conductive element followed by gold and copper so in this group we have both silver and copper .
Group 1 :- It is not the group which contains good electrical conductors since they do not conduct electricity more than silver ... But though iron is very good conducting metal cobalt lacks it ....
Group 3 :- it is not selected since rubber is present which is the main vital point here ... We often wear rubber glovess in our hands or in legs also when we are going to perform any electricity related problems , thus it is not preferred at all infact it reduces the chances of electricity .
Group 4 :- Since wood is present . It does not conduct electricity at all .
Answer:
iron copper silver aluminium