space hard MCQ

Jupiter's magnetosphere is primarily powered by which energy source?

  1. Solar wind
  2. Planetary rotation
  3. Tidal heating
  4. Internal heat

Answer: Planetary rotation

Jupiter's rapid rotation (9.9 hr) drives magnetospheric dynamics via centrifugal forces and Io plasma torus coupling, unlike solar-wind-dominated Earth.

Topic Solar System - Magnetospheres
Exam Relevance UPSC Prelims, General Science