Question
Download Solution PDFWhen the length of the solenoid is doubled without any change in the number of turns and area of the coil. Then its self-inductance will be-
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept
The inductance of an air core solenoid is given by:
\(L={\mu _oN^2A\over l}\)
where, L = Inductance
N = No. of turns
A = Area
l = Length
Explanation
From the above expression, we observed that self-inductance is inversely proportional to the length of the solenoid.
If the length of the solenoid is doubled, then its self-inductance will become half times.
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