A closely wound solenoid `80cm` long has layers of windings of `400 turns` each
Channel: Doubtnut
Date: 2020-08-02

A closely wound solenoid `80cm` long has layers of windings of `400 turns` each. The diameter of the solenoid is `1*8cm`. If the current carried is `8*0A` estimate the magnitude of `vecB` inside the solenoid near its centre.