Photo AI
A designer is going to use a thermistor in a temperature gauge - Edexcel - GCSE Physics - Question 3 - 2013 - Paper 1
Question 3
A designer is going to use a thermistor in a temperature gauge. He connects the thermistor into this circuit. 12 V supply He heats the thermistor and measures the ... show full transcript
Worked Solution & Example Answer:A designer is going to use a thermistor in a temperature gauge - Edexcel - GCSE Physics - Question 3 - 2013 - Paper 1
Step 1
Plot this value on the graph.
Answer
To plot the value of 0.138 A at 47 °C on the graph, first identify the point where the temperature is 47 °C on the x-axis. Then, move vertically to the corresponding current value of 0.138 A on the y-axis. Mark this point on the graph using a small square, ensuring that it is clearly visible within the context of the existing data points.
Step 2
Draw the curve of best fit through the points.
Answer
To draw the curve of best fit, begin by observing the trend of the existing plotted points. Ensure that the curve passes through or near most of the points, especially those clustered together. The line should be smooth and continuous, clearly representing the overall trend of increasing current with increasing temperature. Avoid making sharp angles or highly erratic paths; instead, opt for a gentle slope that reflects the relationship in the data.