| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.SL.TZ1.12 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 12 | Adapted from | N/A |
Question
A heater of constant power heats a liquid of mass m and specific heat capacity c. The graph below shows how the temperature of the liquid varies with time.
The gradient of the graph is k and no energy is lost to the surroundings. What is the power of the heater?
A. kmc
B. \(\frac{k}{{mc}}\)
C. \(\frac{mc}{{k}}\)
D. \(\frac{1}{{kmc}}\)
Markscheme
A
Examiners report
[N/A]
Syllabus sections
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