Questions
A long solenoid has 1000 turns . When a current of 4 A flows through it, the magnetic flux linked with each turn of the solenoid is 4 x 10-3 Wb .The self inductance of the solenoid is :
detailed solution
Correct option is D
Flux linked with each tum = 4 x 10-3 Wb∴Total flux linked = 1000 [4 x 10-3] Wb= 4 Wbϕtotal=Li=4⇒L=1 HTalk to our academic expert!
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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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