| Date | November 2016 | Marks available | 1 | Reference code | 16N.3.hl.TZ0.9 |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | Outline | Question number | 9 | Adapted from | N/A |
Question
Superconductors are materials that conduct electric current with practically zero resistance.
Describe the Meissner effect.
[1]
a.
Outline one difference between type 1 and type 2 superconductors.
[1]
b.
Markscheme
creation of a mirror image magnetic field of an external field «below the critical temperature/Tc of the superconductor»
OR
expulsion of a magnetic field from a superconductor «below its critical temperature/Tc»
a.
Accept “Type 1: «most» metals AND Type 2: alloys/metal oxide ceramics/perovskites”.
b.
Examiners report
[N/A]
a.
[N/A]
b.
