Question

A solenoid is a coil wound into a tightly packed helix. The term was invented byfrench physicist andré-marie ampère to designate a helical coil.



in physics, the term refers to a coil whose length is substantially greater than its diameter, often wrapped around a metalliccore, which produces a uniform magnetic field in a volume of space (where some experiment might be carried out) when anelectric current is passed through it.



a solenoid is essentially a device used to create magnetic fields by passage of current through it. Its shape is somewhat like a spiral spring,like a spiral loop of wire. A solenoid may also be regarded as a circular coil, albeit with a very large number of turns.

Answer 1

So whats the question here

Answer 2

Hey u have defined the solenoid.

Where is the question??

So, I m defining it in my words.

$\underline\bold{Solenoid:-}$

Solenoid is made by looping a metal wire around a rod . The metal wire used should we made from the metal which is a good conductor. It generates the magnetic field when current is passed through it.

A solenoid is a helix whose diameter is comparatively very small than its length.

When the current is passed through it a nearly uniform magnetic field is set up in the interior and along the axis of solenoid.

B = u. n I

if you want to increase the magnetic field then can we have to

(i) increases the intensity of current flowing through it

(ii). increase the number of turns per unit length.