What shape of path does an electron follow when moving at right angles to a uniform magnetic field? Explain why.
یکساں مقناطیسی میدان پر قائمہ زاویے سے حرکت کرنے والا الیکٹران کس شکل کا راستہ اختیار کرتا ہے؟ وجہ واضح کریں۔
Solution & explanation
A circular path, neglecting other forces and radiation losses. Magnetic force qvB is always perpendicular to velocity, changing direction but not speed. It acts as centripetal force: qvB = mv²/r. A parallel velocity component would instead make a helix.
Independent study answer. Original textbook ↗ · English-medium printed page 151–152.