What is the correct sequence of conductivity when arranged in ascending order?
Metals, semiconductors, insulators
Insulators, metals, semi-conductors
Semiconductors, metals, insulators
Insulators, semiconductors, metals
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC CAPF – 2013
– Insulators have very low conductivity, resisting the flow of charge (e.g., rubber, plastic, glass).
– Semiconductors have conductivity between that of insulators and conductors, which can be significantly altered by temperature, doping, or external fields (e.g., silicon, germanium).
– Metals (conductors) have high conductivity, allowing charge to flow easily (e.g., copper, silver, gold).
Arranging these in ascending order of conductivity means starting from the lowest conductivity to the highest. Therefore, the correct sequence is Insulators < Semiconductors < Metals.