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Questions  

If the number of turns in a coil is doubled, Then self inductance will be 

a
Doubled
b
halved
c
four times
d
remains unchanged

detailed solution

Correct option is C

self inductance L ∝ N2

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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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