1. Figure 43. 27 (a) Physical arrangement of a p–n junction
Figure (a) Physical arrangement of a p–n junction. (b) Internal electric field versus x for the p–n junction. (c) Internal electric potential difference DV versus x for the p–n junction. The potential difference DV0 represents the potential difference across the junction in the absence of an applied electric field.
Fig 43-27, p.1424

2. Figure The electric field lines (in red) around two spherical conductors. The smaller sphere has a net charge Q, and the larger one has zero net charge. The broken blue curves are intersections of equipotential surfaces with the page.

3. N ------ P junction Fig 43-27, p.1424
Figure (a) Physical arrangement of a p–n junction. (b) Internal electric field versus x for the p–n junction. (c) Internal electric potential difference DV versus x for the p–n junction. The potential difference DV0 represents the potential difference across the junction in the absence of an applied electric field.
Fig 43-27, p.1424

4. Figure 43. 27 (a) Physical arrangement of a p–n junction
Figure (a) Physical arrangement of a p–n junction. (b) Internal electric field versus x for the p–n junction. (c) Internal electric potential difference DV versus x for the p–n junction. The potential difference DV0 represents the potential difference across the junction in the absence of an applied electric field.
Fig 43-27, p.1424

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Figure The electric field lines (in red) around two spherical conductors. The smaller sphere has a net charge Q, and the larger one has zero net charge. The broken blue curves are intersections of equipotential surfaces with the page.