A tightly wound 100 turns coil of radius 10 cm carries a current of 7 A . The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as 4 π × 1 0 − 7 SI units):N

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A tightly wound 100 turns coil of radius 10 cm carries a current of 7 A . The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as 4 π × 1 0 − 7 SI units):NEET 2024

TestHub · Accepted Answer

The magnitude of magnetic field due to circular coil of N turns is given by ​ B C ​ = 2 R μ 0 ​ i N ​ = 2 × 0.1 4 π × 1 0 − 7 × 7 × 100 ​ = 4.4 × 1 0 − 3 T = 4.4 mT ​

Physics - Magnetism Question with Solution | TestHub

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