Question

3
.
A long solenoid has 200 turns per cm and
carries a current 'i'. The magnetic field at
its centre is 6.28 x 10-2 weber/m². Another
long solenoid has 100 turns per cm and it
carries a current i/3. the value of the
magnetic field at its centre is
[AIEEE-2006]
1) 1.05 x 104 weber/m²
2) 1.05 x 10-2 weber/m²
3) 1.05 x 10-5 weber/m²
4) 1.05 x 10 weber/m²​

Answer 1

Answer:

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