Q.

Which of the following have lowest resistivity?


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a

Iron

b

Mercury

c

Silver

d

copper 

answer is C.

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Detailed Solution

Silver has the lowest resistivity.
Resistivity is the property of material to oppose the flow of charges. If the resistivity is high the charges will not flow easily, implying low conductivity.
The resistivity of silver is least, implying it’s the best conductor among the four given as options.
  
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