Electric dipole field lines (for comparison)विद्युत द्विध्रुव की क्षेत्र रेखाएँ (तुलना हेतु)Electric dipole field lines (for comparison)

NCERT Fig 5.2(c) · Class 12 Physics · Chapter 5 · interactive diagram

Parts and what they mean

• Electric field lines (विद्युत क्षेत्र रेखाएँ) — They begin on the positive charge and end on the negative charge — they do not continue through the charges.
• Charge +q (आवेश +q) — A source of E: net outward flux q/ε₀.
• Charge −q (आवेश −q) — A sink of E.
• Closed surface i (बंद पृष्ठ i) — Encloses no charge: lines in = lines out, net flux zero.
• Closed surface ii (बंद पृष्ठ ii) — Encloses +q: net OUTWARD flux. For a magnet there is no such surface — magnetic flux through every closed surface is zero.

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 5.2(c). Report a mistake