| Date | November 2017 | Marks available | 2 | Reference code | 17N.3.hl.TZ0.6 |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | Explain | Question number | 6 | Adapted from | N/A |
Question
The development of materials with unique properties is critical to advances in industry.
Explain why Type 2 superconductors are generally more useful than Type 1.
Markscheme
Any two of:
have higher critical temperatures/Tc «than Type 1»
OR
can act at higher temperatures
have higher critical magnetic fields/Bc «than Type 1»
less time needed to cool to operating temperature
less energy required to cool down/maintain low temperature
Do not accept “Type 2 has a gradual transition to a superconducting state but in Type 1 it is a sharp transition”.
[Max 2 Marks]
Examiners report
[N/A]
