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At the centre of a straight solenoid the magnetic induction is B. If the length is reduced to half but to keep the number of turns same, these are wound in 2 layers then the magnetic induction at the centre will be?

At the centre of a straight solenoid the magnetic induction is B. If the length is reduced to half but to keep the number of turns same, these are wound in 2 layers then the magnetic induction at the centre will be?

Grade:12

1 Answers

Sandeep Bhamoo
443 Points
4 years ago
B=u°ni , n=no. of loops per unit length i=current u°=constant. Here in this question only no. of loops per unit length is doubled hence B`=2B. Lease do approve my a answer if correct

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