1. The increase of number of substantial defects in the metallic crystals will l

Question

1. The increase of number of substantial defects in the metallic crystals will lead to the decreas of electric conductivity. Fals teods to incadedmavenana 2. Dielectric polarization is the process of generation and orientation of dipoles. Truc 3. Type 1 superconductor only has one critical magnetic field, and it usually occurs at highes temperature compared with Type 2 superconductor 4. Interfacial polarization typically takes place at lower frequencies than electronic polarization 5. Antiferromagnetic materials have net magnetic dipole moment in the absence of magneti field 6. With the increase of temperature, the mean scattering time of electrons will decrease 7. Dielectric breakdown strength suggests the upper limit of the application electric field of the dielectric materials 9. Polarization is the average dipole moment per unit volume 10. Fermi energy is the energy level at which the probability of finding an electron is 100%. 11. On the n-type side of a space charge layer in a pn junction, the charge carriers are holes. 12. Both diamagnetic and paramagnetic materials have negative magnetic susceptibility. 13. When a conduction electron tunnels to valence band, there will be only photon generated. 14. Magnetization (M) is equal to magnetization current (Im), numerically 15. The generation and separation of EHPs contributes to the electricity in solar cell.

Explanation / Answer

1. false ( it will increase)

2. true

3.true

4. true

5.true

6.false.. it will increase

7.TRUE

9.FALSE. it is defined as induced dipole moments in a magnetic field.

10.true.

11.true

12.false ... paramagnetic have postivite value

13.true

14. false

15.true

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