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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 thorough-understanding
Which of the following changes will NOT increase the displacement (force) of a current-carrying rod suspended in a magnetic field? (A) Increasing the current through the rod (B) Using a stronger magnet (C) Increasing the length of the rod (D) Reversing the direction of the current
  1. A Increasing the current through the rod
  2. B Using a stronger magnet
  3. C Increasing the length of the rod
  4. D Reversing the direction of the current
Generated by claude-sonnet-4-6 · 2026-06-26 01:12 · grounding rag
Model Answer

(D) Reversing the direction of the current

Reversing the current reverses the direction of displacement, not its magnitude. It does not increase the force on the rod.

Explanation

Options A, B, and C all increase the magnitude of the force (displacement). Reversing current only changes the direction of deflection (left→right), as shown in Activity 12.7. Examiners expect students to distinguish between magnitude and direction of force.

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