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Grade 910 grade science

why does magnetic field decrease towards the end of a solenoid ?

Profile image of Balakumar
8 Years agoGrade 9
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1 Answer

Profile image of nishant narkar
8 Years ago
The net magnetic field is the sum from each individual loop and is maximum in the middle of the solenoid because that point minimizes the average distance to each loop.   At the end of the solenoid the average distance to all the loops is greater, hence the magnetic field is less.