On the grid provided on page 5, plot the graph of electrical energy, E, against temperature rise, AT.

Using your graph, calculate the slope, S, of the graph.

What physical quantity does the slope represent?

Use the value of the slope S, calculated in (b) on page 4, to determine the specific heat capacity of the liquid in the units Jg-1K-1. Assume there is negligible heat transferred to or from the container holding the liquid.

How does this procedure help in minimizing error in the experiment?

State ONE other useful precaution that the student should have taken

Given that the power supplied to the immersion heater was kept constant at 40 W, calculate the time taken for 18.0 kJ of energy to be supplied.

Label the parts of the cell indicated in Figure 1.

State THREE differences between these cells.

Calculate the charge added to the battery in Coulombs.