Jee Main
Magnetics
JEE Main 2025 (Online) 29th January Evening Shift
INTEGER+4 / -12025
The magnetic field inside a 200 turns solenoid of radius 10 cm is $2.9 \times 10^{-4} ~\mathrm{Tesla}$. If the solenoid carries a current of 0.29 A , then the length of the solenoid is _______ $\pi \mathrm{cm}$.