EasyNEET TEST
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A circular coil of radius 10 cm has 500 turns and carries a current of 2 A. The magnetic field at the centre of the coil is:
A
2π × 10⁻³ T
B
4π × 10⁻³ T
C
2π × 10⁻² T
D
4π × 10⁻² T
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