Hall effect Interview Questions

Hall effect interview questions

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Total Questions: 5

1. When does a normal conductor become a superconductor?

A. At normal temperature

B. At Curie temperature

C. At critical temperature

D. Never

Correct Answer is : At critical temperature

2. In which of the following does the residual resistivity exist?

A. Impure metal at high temperature

B. Pure metal at low temperature

C. Pure metal at high temperature

D. Impure metal at low temperature

Correct Answer is : Impure metal at low temperature

3. Meissner effect occurs in superconductors due to which of the following properties?

A. Diamagnetic property

B. Magnetic property

C. Paramagnetic property

D. Ferromagnetic property

Correct Answer is : Diamagnetic property

4. What happens when a large value a.c. current is passed through superconductors?

A. Conductivity increases

B. Superconducting property is destroyed

C. It acts as a magnet

D. It becomes resistant

Correct Answer is : Superconducting property is destroyed

5. How is persistent current produced in supermagnets?

A. By passing ac current

B. By magnetising it

C. By passing dc current

D. By increasing the resistance

Correct Answer is : By passing dc current

Hall effect interview questions