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Question
Determine the self-inductance of 4000 turn air-core solenoid of length 2m and diameter 0.04 m.
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Solution
Given data:
n = 4000
l = 2m
diameter d = 0.04 m
radius r = 0.02 m
Self inductance L =?
L = µnA2 l
L = 4π × 10-7 × 4000 × π × 0.02 × 0.02 × 2
L = 16π × 10-1 × π × 8 × 10-4
L = 1262 × 10-5
L = 12.62 × 10-3 H
L = 12.62 mH
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