General Knowledge - Physics - Discussion
Discussion Forum : Physics - Section 1 (Q.No. 42)
42.
Superconductors are substances which
Discussion:
6 comments Page 1 of 1.
Bhavesh said:
6 years ago
Superconductivity only achieves at low temperatures.
Even it is negative.
A is also correct.
Even it is negative.
A is also correct.
Ashish said:
10 years ago
Mercury example.
Hence they do not resist to electricity that's they are not used in domestic works.
Copper is used due to its high resistance against electricity.
Hence they do not resist to electricity that's they are not used in domestic works.
Copper is used due to its high resistance against electricity.
Sunday kingsley said:
1 decade ago
In superconductor the opposing force tends to obstruct the flow of electric current is very low, e.g in mercury and it can causes damages and that's why is not used domestically in generating electricity and copper is preferred because it contains more resistance than that of mercury. Sure the answer is correct.
Raj said:
1 decade ago
Answer A can also be true as : Phenomenon of superconductivity comes into play at low temp.
Palanivel said:
1 decade ago
High resistance there is low electricity low resistance there is high electricity, here superconductor has no resistance so electricity flow.
Bhavana said:
1 decade ago
Superconductor is the property in which 0 resistence obtained at a certain temperature and in a some substance. Ex. Mercury which shows superconductivity phenomena below the temperature 4. 3 k.
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