A resistor was connected to a variable voltage source and the current was measured for various voltages. The following results were obtained: Trial Voltage (V) Current (mA) 1 0.91 2.8 2 1.98 6.5 3 2.92 9.9 4 4.09 13.8 where V is the voltage difference across the resistor and I is the current travelling through the resistor at the same time. Calculate the resistance for each trial and the average of the resistances. Determine the uncertainty in the average resistance. Report these values below. (When entering units, use ohm for 2.) R = ±