I have asked one question on brainly but answer is wrong and the question is A wire of fixed length l is wound on a solenoid of length l and radius r its self inductance is found to be L . Now if same wire is wound on a solenoid of length l/2 and radius r/2 then its self inductance will be
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decrease by half as strength is directly proportional to length of solenoid
Taanya284:
yoo
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