- 08 08 1 What Was The Independent Variable In The Investigation Tick One Box Distance Between The Lamp And The Sola 1 (71.53 KiB) Viewed 12 times
- 08 08 1 What Was The Independent Variable In The Investigation Tick One Box Distance Between The Lamp And The Sola 2 (107.27 KiB) Viewed 12 times
08 08 1 What was the independent variable in the investigation? Tick (✓) one box. Distance between the lamp and the solar cell Output potential difference of the solar cell Output power of the lamp Surface area of the solar cell 2 Describe how the student could make the measurements in the investigation. Measurement of surface area Measurement of output potential difference [1 mark] [4 marks]
08 08 3 Figure 11 shows the results. 5.0- 4.5- 4.0- 3.5- 3.0 2.5- 2.0- 1.5- Output potential difference in volts Figure 11 20 30 40 50 70 60 Surface area of solar cell in cm² Determine the surface area of a solar cell needed to provide an output potential difference of 4.0 V. [1 mark] Surface area = cm² A solar cell can be used to power a small fan. The student connected the largest solar cell to the fan. Figure 12 shows the arrangement. Figure 12 Fan Solar cell Lamp 4 Give one advantage of using the largest solar cell to power the fan. [1 mark]