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30-01-2024
Physics

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BX and BY are the magnetic field at the centre of two coils of two coils X and Y respectively, each carrying equal current. If coil X has 200 turns and 20 cm radius and coil Y has 400 turns and 20 cm radius, the ratio of BX and BY is

(A) 1 : 1

(B) 1 : 2

(C) 2 : 1

(D) 4 : 1

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