Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ — decoded step-by-step.
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Q · MagnetismDifficult · 45s
A charged particle moves in a helical path in a magnetic field when: 299
TopicMagnetism
Question Typemultiple choice
DifficultyDifficult
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
Parallel component → forward motion, perpendicular → circular motion ⇒ helix.
307
Final Answer: Option C — Velocity has both parallel and perpendicular components
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