Q1. [1] straightforward initial-understanding
State the right-hand thumb rule for finding the direction of the magnetic field around a straight current-carrying conductor.
Generated by claude-sonnet-4-6 · 2026-06-26 01:08 · grounding rag
Model Answer
If you hold a current-carrying straight conductor in your right hand with the thumb pointing in the direction of current, the curled fingers give the direction of the magnetic field around the conductor.
Source: Chapter 12, Section 12.2.2 Right-Hand Thumb Rule
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Explanation
- Examiners look for two key elements: thumb → direction of current and curled fingers → direction of magnetic field.
- Mention "right hand" explicitly — it is part of the rule's name and essential for full marks.
- One crisp sentence is sufficient for 1 mark; no diagram is needed unless asked.