일반물리학 2 — Current and Resistance: Problem 12

12 In Fig. 26-19a, a \(15 \Omega\) resistor is connected to a battery. Figure 26-19b shows the increase of thermal energy \(E_{th}\) in the resistor as a function of time \(t\). The vertical scale is set by \(E_{th,s} = 2.50 \text{ mJ}\), and the horizontal scale is set by \(t_s = 4.0 \text{ s}\). What is the electric potential across the battery?