20. A solenoid has number of turns per meter n = 1000 turns m^-1 and carries a current of2 A. The magnetic intensity or magnetising intensity H of the solenoid is given by
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The magnetic intensity of the solenoid is 2000 Am⁻¹.
Explanation:
The number of turns of the solenoid per unit length, n = 1000 m⁻¹
The current carried by the solenoid, I = 2 A
The magnetic intensity, H of the solenoid is given by the equation,
H = nI
H = 1000 × 2
H = 2000 Am⁻¹
Am⁻¹ (ampere per meter) is the unit of magnetic intensity.
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