NEET Class neet Answered
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Asked by Prashant DIGHE | 06 Dec, 2019, 10:52: PM
Expert Answer
magnetic field at common centre is due to
(1) magnetic field due to infinite wire which is at distance b from common centre = μoi / ( 2πb ) ,
(2) magnetic field due to anticlockwise current carrying loop of radius b = μoi / ( 2b ) ,
(3) magnetic field due to clockwise current carrying loop of radius a = μoi / ( 2a )
If net magnetic field is zero, then we have, μoi / ( 2πb ) + μoi / ( 2b ) - μoi / ( 2a ) = 0
1 / ( πb ) + 1 / ( b ) - 1/ ( a ) = 0 or ( b/a ) = ( 1 / π ) + 1 or a/b = π / ( π + 1 )
Answered by Thiyagarajan K | 07 Dec, 2019, 03:33: PM
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