Charge moving perpendicular to B goes in a circleB के लंबवत गतिमान आवेश वृत्त में चलता हैCharge moving perpendicular to B goes in a circle

NCERT Fig 4.5 · Class 12 Physics · Chapter 4 · interactive diagram

Parts and what they mean

• Uniform B into the page (पृष्ठ के अंदर एकसमान B) — v is perpendicular to B, so the force qvB is perpendicular to v.
• Positive charge +q (धन आवेश +q) — An electron (−e) in the same field would go round clockwise.
• Velocity v (tangent) (वेग v (स्पर्श रेखा पर)) — Its size never changes — the magnetic force does no work.
• Magnetic force = centripetal force (चुंबकीय बल = अभिकेंद्र बल) — qvB = mv²/r always points to the centre.
• Radius r = mv/(qB) (त्रिज्या r = mv/(qB)) — More momentum → bigger circle; stronger B → smaller circle.
• Circular path (वृत्ताकार पथ) — Period T = 2πm/(qB): the same for every speed.

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 4.5. Report a mistake