1 Physics -- Magnetic Field

What is the self - inductance of an air solenoid 50cm long and 2cm radius if it has 500 turns?

What is the self - inductance of an air solenoid $50 c m$ long and $2 c m$ radius if it has 500 turns?

1 Answers

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Solution:

The self-inductance is given as,

L = (µo) N² A / l

l = 50 cm = 0.5 m

r = 2cm = 0.02 m

A = pi * r^2 = pi * (0.02)^2

N = 500

Hence, L = (4 pi * 10^-7) * (500)^2 * (pi * (0.02)^2) / (0.5)

= 7.896 * 10^-4 Henry

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