| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.SL.TZ2.16 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 16 | Adapted from | N/A |
Question
Two electrodes, separated by a distance d, in a vacuum are maintained at a constant potential difference. An electron, accelerated from one electrode to the other, gains kinetic energy Ek.
The distance between the electrodes is now changed to \(\frac{1}{3}\)d.
What is the gain in kinetic energy of an electron that is accelerated from one electrode to the other?
- \(\frac{{{E_k}}}{3}\)
- Ek
- 3Ek
- 9Ek
Markscheme
B
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