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Science (086) — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [1] medium initial-understanding
A positive charge moves vertically downward and enters a magnetic field directed horizontally from south to north. Using Fleming's left-hand rule, what is the direction of force on the charge? (a) East (b) West (c) Vertically upward (d) Vertically downward
  1. A East
  2. B West
  3. C Vertically upward
  4. D Vertically downward
Generated by claude-sonnet-4-6 · 2026-06-26 01:09 · grounding rag
Model Answer

(b) West

Using Fleming's left-hand rule: middle finger (current/charge motion) → downward; forefinger (magnetic field) → north; thumb points → West.

Explanation

Fleming's left-hand rule: forefinger = field direction (South→North), middle finger = current direction (positive charge moving down = current downward), thumb = force direction. The thumb points West. Note: for a positive charge, current direction = direction of motion.

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.