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The student takes measurements for two other components, A and B - Edexcel - GCSE Physics Combined Science - Question 3 - 2016 - Paper 1
Question 3
The student takes measurements for two other components, A and B. The results for both these components are shown in Figure 4.
Worked Solution & Example Answer:The student takes measurements for two other components, A and B - Edexcel - GCSE Physics Combined Science - Question 3 - 2016 - Paper 1
Step 1
Component A: Analysis of Resistance vs Temperature
Answer
To analyze Component A, we observe the graph which shows resistance decreasing as temperature increases. The relationship can be represented mathematically by the equation:
R = R_0 e^{- rac{T}{ au}}
where:
- is the resistance at 0°C,
- is the temperature,
- is a constant related to the material.
The data points should be accurately plotted with the x-axis representing temperature in °C and the y-axis representing resistance in Ω.
Step 2
Component B: Analysis of Resistance vs Temperature
Answer
In the case of Component B, the graph indicates a more complex relationship. The resistance appears to initially increase as the temperature rises, before possibly decreasing again. This could indicate a phase change or a change in material properties. To mathematically describe this component, a polynomial or piecewise function might be necessary, depending on the specific data points.
Again, ensure the axes are labeled appropriately and all points from the data set are plotted accurately.