Questions
A coil of wire of radius r has 600 turns and a self inductance of 108 mH. The self inductance of a similar coil of 500 turns will be
detailed solution
Correct option is A
The inductances of two coils ate given byL1=μ0N12πr2 and L2=μ0N22πr2 Now L2L1=N2N12 or L2=L1N2N12∴L2=108×5006002=75mH.Talk to our academic expert!
Similar Questions
A coil is wound as a transformer of rectangular cross-section. If all the linear dimensions of the transformer are increased by a factor 2 and the number of turns per unit length of the coil remain the same, the self inductance increased by a factor of
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