A closely packed coil having 1000 turns has an average radius of 62.8 cm . If current carried by the wire of the coil is 1 A , the value of magnetic field produced at the centre of the coil will be (p

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A closely packed coil having 1000 turns has an average radius of 62.8 cm . If current carried by the wire of the coil is 1 A , the value of magnetic field produced at the centre of the coil will be (permeability of free space = 4 π × 1 0 7 H / m ) nearly:NEET 2022 (Phase 2)

TestHub · Accepted Answer

As, magnetic field at centre of coil, B B ​ = 2 R μ 0 ​ N i ​ = 2 × 62.8 × 1 0 − 2 4 π × 1 0 − 7 × 1000 × 1 ​ = 2 × 62.8 × 1 0 − 2 4 × 3.14 × 1 0 − 7 × 1 0 3 ​ = 1 0 − 3 T ​

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