Question:medium
A wire of certain length carrying current $I$, when bent into a circular coil of single turn produces a magnetic field $B$ at its centre. If the same wire is bent into a circular coil of 3 turns and it carries the same current, then the magnetic field at the centre of the coil is
A wire of certain length carrying current $I$, when bent into a circular coil of single turn produces a magnetic field $B$ at its centre. If the same wire is bent into a circular coil of 3 turns and it carries the same current, then the magnetic field at the centre of the coil is
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Same wire → radius decreases as turns increase.
Updated On: Apr 24, 2026
- $12B$
- $3B$
- $6B$
- $9B$
- $15B$
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The Correct Option is D
Solution and Explanation
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