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PHY-2022-CR6-035
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PHY · PHY-2022-CR6-035
Physics
A long solenoid of radius 1 mm has 100 turns per mm. If 1 A current flows in the solenoid, the magnetic field strength at the centre of the solenoid is
A
6.28 × 10–4 T
B
6.28 × 10–2 T
C
12.56 × 10–2 T
D
12.56 × 10–4 T
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