Parameters for calculating the graphic resistance of 3.0 V–0.25 A Bulb 1(R0 = 1.8 Ω) and 3.0 V–0.25 A Bulb 3(R0 = 1.6 Ω) from the measured voltages applied to Bulb 1 and Bulb 3 in a simple electric circuit with Bulb 1 and Bulb 3 connected in parallel.