Science (086) — AI-generated practice question

A current-carrying wire produces a magnetic field around it. The strength of this magnetic field decreases as the distance from the wire increases. Since the compass needle deflects due to this magnetic field, a weaker field at a greater distance exerts a smaller force on the needle, causing less deflection.

Source: Chapter 12, Section 12.2 – Magnetic Field due to a Current-Carrying Conductor

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• The key concept is that magnetic field strength decreases with distance from the source.
• Link two ideas for full marks: (1) current produces a magnetic field, and (2) field weakens with distance → less deflection.
• Avoid just saying "the field becomes weak" without explaining why deflection depends on field strength — connect both steps explicitly.