Edexcel Gcse Physics/additional Science - Unit P2 Physics For Your Future Page 17
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3417
(c) The inventor takes readings of the potential
difference (voltage) across the lamp and the
current at different positions of the control from
“dim” to “bright”.
dim
bright
voltage / V
0·6
1·1
2·0
2·7
3·9
6·0
current / A
0·07
0·10
0·14
0·17
0·21
0·26
She plots a graph of the readings.
0·30 –
bright
0·20 –
current / A
0·10 –
dim
0·00 –
0
1
2
3
4
5
6
7
potential difference (voltage) / V
(i)
Complete this graph by plotting the missing
point and drawing the curve of best fit.
(2 marks)
(Question continues on next page)
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