What happens to the magnetic field produced by a given current in the conductor when the distance increases?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. It decreases.
The magnetic field produced by a current-carrying conductor decreases as the distance from the conductor increases. This happens because the magnetic field spreads out as it moves away from the source. For a long, straight wire, the strength of the magnetic field is inversely proportional to the distance from the wire (B ∝ 1/r). So, if the distance is doubled, the magnetic field becomes half as strong. This weakening of the magnetic field with distance is a fundamental concept in electromagnetism and is essential for understanding how magnetic forces operate in real-world applications.