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A solenoid is 2 m long and 3 cm in diameter. It has 5 layers of windings of 1000 turns each and carries

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A solenoid is 2 m long and 3 cm in diameter. It has 5 layers of windings of 1000 turns each and carries a current of 5 A. What is the magnetic field at its center? Use the standard value of μ0 .

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B = μ0 ni

4π x 10-7 x 5000/2 x 5 = 1.57 x 10-2 T

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