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Magnetic field due to 0.1 A current flowing through a circular coil of radius 0.1 m and 1000 turns at the centre of the coil is

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2 × 10−1T

4.31 × 10−2T

6.28 × 10−4T

9.81 × 10−4T

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detailed solution

Correct option is C

B= μ0Ni2r= 4π× 10−7 × 1000 × 0.12 × 0.1 = 6.28× 10−4T

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