IB Prized Writing Sevenoaks School IB Prized Writing 2014 | Page 31

Robert Cinca - Physics My results indicate an inverse-square relationship between the final current and the surge current time (as seen in Figure 4): My results indicate an inverse-square relationship between the final current and the surge current time (as seen in Figure 4): Figure 4: Graph representing Surge Current Time and Final Current Figure 4: Graph representing Surge Current Time and Final Current Equation of trend line (as seen in Figure 4) with its uncertainties: The equation that has resulted from the graph is: ΔT= (0.002 ± 0.001) I -2 - (0.004 ± 0.061) Equation of trend line (as seen in Figure where: 4) with its uncertainties: The equation that has resulted from the graph is: ΔT= (0.002 ± 0.001) I -2 - (0.004 ± 0.061) 2 o the gradient = 0.002sA 2 ± 0.001sA where: o o o o o o o uncertainty in gradient, the gradient = 0.002sA 2 ± 0.001sA 2 Dm=(0.003-0.001)/2=0.001sA 2 uncertainty in gradient, y intercept = -0.004s ± 0.061s Dm=(0.003-0.001)/2=0.001sA 2 uncertainty in y intercept, y intercept = -0.004s ± 0.061s Dc= (0.044+0.077)/2=0.061s uncertainty in y intercept, Dc= (0.044+0.077)/2=0.061s Analysis: My line of best fit is very close to the origin, and taking the error bars into account, it Analysis: could go through the origin, indicating a proportionality between the surge current 2 time line and of 1/(final . My best fit current) is very close to the origin, and taking the error bars into account, it could go through the origin, indicating a proportionality between the surge current 12 time and 1/(final current) 2 . 30 12