Question
Download Solution PDFA 20 mH coil is coupled with a coil of 5 mH. What could be the maximum possible value of mutual inductance?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is option 1):(10 mH)
Concept:
The mutual inductance is given by: M = k\( \sqrt{L_1\times L_2} \)
where,
M = Mutual inductance
L = Self-inductance
k = Coefficient of coupling
The value of k lies between 0 and 1.
The maximum value of mutual inductance is possible for k = 1.
Calculation:
Given
K =1
L1 = 5 mH
L2 = 20 mH
M = k\( \sqrt{L_1\times L_2} \)
= \(\sqrt{100} \)
= 10 mH
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