Current Electricity Assignment missing heading Reading I / A 1 2 3 + 5 d) The diagram below is a sketch of the graph plotted by Rachel and Robert based on their results obtained during their experiment i. Does the filament lamp obey Ohm's law? ii. Give a reason to your answer. I/A p.d. / V e) Give one precaution taken by Rachel and Robert in order to obtain the most possible accurate readings.​