Field of a solenoid (computed from its turns)परिनालिका का क्षेत्र (उसके फेरों से परिकलित)Field of a solenoid (computed from its turns)

NCERT Fig 4.15 · Class 12 Physics · Chapter 4 · interactive diagram

Parts and what they mean

• Turns of the solenoid (cut through) (परिनालिका के फेरे (काट में)) — Current comes out of the page at the top and goes in at the bottom of every turn.
• Field lines (क्षेत्र रेखाएँ) — Between neighbouring turns the little circles cancel; inside they add up into a strong, straight field.
• P: interior mid-point (P: आंतरिक मध्य-बिंदु) — Field is uniform, strong and along the axis.
• Q: exterior mid-point (Q: बाहरी मध्य-बिंदु) — Field is weak and along the axis. For a very long solenoid it → 0.

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 4.15. Report a mistake