A student is given the apparatus shown in the figure and asked to determine the specific heat capacity of water.
Figure: The apparatus available for determining the specific heat capacity of water

Describe a method the student could use to determine the specific heat capacity of water.
The value the student obtains for the specific heat capacity of water is larger than the true value.
Suggest why.
40 exam-style questions on AQA GCSE Physics 3.2 Internal energy and energy transfers, covering 3.2.1 Internal energy, 3.2.2 Temperature changes in a system and specific heat capacity, and 3.2.3 Changes of state and specific latent heat. Each one has a worked solution and a mark scheme showing where the marks go.