Which of the following statements is are correct about a lsquo Superconductor rsquo 1 nbs...........

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Which of the following statements is/are correct about a ‘Superconductor’?

1. It allows electric current to flow without any energy loss.

2. All materials that can be turned into superconductors have same critical temperature.

3. Metals cannot be used to create superconductors.

Select the correct answer using the code given below.

1 only

2 only

2 and 3 only

1 and 3 only

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Explanation:

Statement 1 is correct.

In principle, superconductors can allow electrical current to flow without any energy loss (although, in practice, an ideal superconductor is very hard to produce). This type of current is called a super current.

Statement 2 is incorrect.

Not all materials turn into superconductors, and the materials that do, each have their own value of critical temperature.

Statement 3 is incorrect.

A superconductor is an element or metallic alloy which, when cooled below a certain threshold temperature, dramatically loses all its electrical resistance.