A long solenoid has `200 turns per cm` and carries a current `i`. The magnetic
Channel: Doubtnut
Date: 2020-07-05

A long solenoid has `200 turns per cm` and carries a current `i`. The magnetic field at its centre is `6.28xx10^(-2) weber//cm^(2)`. Another long soloenoid has `100 turns per cm` and it carries a current `(i)/(3)`. The value of the magnetic field at its centre is