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30-01-2024
Physics

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A closely wound flat circular coil of 25 turns of wire has diameter of 5cm which carries current of 4 amperes, the flux density at the centre of a coil will be
A 1.256×10⁻³ tesla
B 1.679×10⁻⁵ tesla
C 1.512×10⁻⁵ telsa
D 2.28×10⁻⁴ telsa

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