A student observes that the deflection of a compass needle decreases as it is moved away from a current-carrying straight conductor. What is the most likely reason for this observation?
Subject: General Awareness | Topic: Science | Difficulty: MEDIUM
Options
- (A) The electric current in the conductor decreases with distance
- (B) The Earth's magnetic field becomes stronger with distance
- (C) The shape of the wire affects the field strength only at near distances
- (D) The magnetic field strength decreases with increasing distance from the conductor
Verified Answer
Option (D): The magnetic field strength decreases with increasing distance from the conductor
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