IB Prized Writing Sevenoaks School IB Prized Writing 2014 | Page 46

Robert Cinca - Physics
Time Taken to Reach Maximum Surge Current After Filament Bulb is Turned On, t/s
1
0.004
0.004
0.005
0.004
0.004
0.008
0.005
0.004
0.008
0.004
0.005
0.005
2
0.005
0.004
0.004
0.004
0.005
0.005
0.004
0.004
0.004
0.003
0.006
0.005
±0.001s
3
0.004
0.004
0.004
0.005
0.004
0.004
0.004
0.004
0.005
0.004
0.005
0.004
4
0.005
0.004
0.004
0.004
0.006
0.005
0.004
0.005
0.004
0.005
0.004
0.006
5
0.005
0.004
0.004
0.004
0.005
0.005
0.005
0.004
0.006
0.004
0.005
0.004
Average
Uncertainty
0.005
0.004
0.004
0.004
0.005
0.005
0.004
0.004
0.005
0.004
0.005
0.005
0.001
0.001
0.001
0.001
0.001
0.002
0.001
0.001
0.002
0.001
0.001
0.001
Data Tables for the 6.5V 0.30A Filament Bulb
Final
Current
I/A
(±0.01A)
0.13
0.14
0.16
0.17
0.19
0.20
0.21
0.24
0.26
0.27
0.30
0.31
0.32
1/(Final Current) 2 ,I -2 /A -2
Surge Current Time, T/s
Run 1
1.195
0.891
0.813
0.755
0.530
0.430
0.364
0.279
0.268
0.201
0.162
0.167
0.141
Run 2
1.165
0.888
0.799
0.609
0.556
0.441
0.382
0.334
0.273
0.216
0.222
0.185
0.148
(±0.005s)
Run 3 Run 4
1.168 1.148
0.974 0.941
0.853 0.831
0.669 0.698
0.548 0.582
0.468 0.487
0.455 0.408
0.270 0.277
0.298 0.254
0.224 0.265
0.186 0.167
0.150 0.152
0.150 0.190
Run 5
1.190
0.924
0.825
0.674
0.492
0.444
0.363
0.354
0.247
0.245
0.161
0.222
0.106
Average Uncertainty Average Uncertainty
1.173
0.924
0.824
0.681
0.542
0.454
0.394
0.303
0.268
0.230
0.180
0.175
0.147 0.02
0.04
0.03
0.07
0.05
0.03
0.05
0.04
0.03
0.03
0.03
0.04
0.04 59.2
51.0
39.1
34.6
27.7
25.0
22.7
17.4
14.8
13.7
11.1
10.4
9.8 9
7
5
4
3
3
2
1
1
1
0.7
0.7
0.6
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