Same chapter3 marksDifficulty: Medium
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Magnetic Effects of Current and Magnetism
3 marksDifficulty: Medium
A circular coil of 100 turns and radius 0.1 m carries a current of 2 A. Find the magnetic field at its centre. Take μ0 = 4π × 10−7 T m A−1.
Original Khojo Papers practice question — not from a past board paper.
Answer
About 1.26 × 10−3 T
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
B = μ0NI/2r = (4π × 10−7 × 100 × 2) ÷ 0.2 = 4π × 10−4 ≈ 1.26 × 10−3 T.
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