Halliday, Resnick & Walker — Circuits: Problem 56

56 The ideal battery in Fig. 27-53a has emf \( \mathcal{E} = 10.0 \text{ V} \). Plot 1 in Fig. 27-53b gives the electric potential difference \( V \) that can appear across resistor 1 versus the current \( i \) in that resistor when the resistor is individually tested by putting a variable potential across it. The scale of the \( V \) axis is set by \( V_s = 18.0 \text{ V} \), and the scale of the \( i \) axis is set by \( i_s = 3.00 \text{ mA} \). Plots 2 and 3 are similar plots for resistors 2 and 3, respectively, when they are individually tested by putting a variable potential across them. What is the current in resistor 2 in the circuit of Fig. 27-53a?