Question
Download Solution PDFWhen the number of turns per unit length of a solenoid is doubled its self-inductance becomes-
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 directly proportional to the square of the number of solenoid turns.
If the number of solenoid turns doubles, then its self-inductance will become four times.
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