일반물리학 2 — Electric Fields: Problem 34

34 Figure 22-39a shows two charged particles fixed in place on an x axis with separation L. The ratio \(q_1/q_2\) of their charge magnitudes is 4.00. Figure 22-39b shows the x component \(E_{net,x}\) of their net electric field along the x axis just to the right of particle 2. The x axis scale is set by \(x_s = 15.0 \text{ cm}\). (a) At what value of \(x > 0\) is \(E_{net,x}\) maximum? (b) If particle 2 has charge \(q_2 = -3e\), what is the value of that maximum?