Before a compact travel kettle can be used, its heating element must raise the temperature of the water inside.
The heating element has a power rating of 750 W.
The specific heat capacity of water is 4200 J/kg ∘C4200 \text{ J/kg }^\circ\text{C}4200 J/kg ∘C.
Show that it takes the heating element about 190 s to raise the temperature of 0.40 kg of water from 15∘C15^\circ\text{C}15∘C to 100∘C100^\circ\text{C}100∘C.
Use equations from the formula sheet.
36 exam-style questions on Edexcel GCSE Physics 14.2 Specific heat capacity and latent heat, covering 14.2.1 Heating, temperature and changes of state, 14.2.2 Specific heat capacity and specific latent heat, 14.2.3 Specific heat capacity calculation, 14.2.4 Specific latent heat calculation, and 14.2.5 Reducing energy transfer through thermal insulation. Each one has a worked solution and a mark scheme showing where the marks go.