Difference between revisions of "Solenoid"

Revision as of 13:59, 4 March 2019

A solenoid is made from a coil of wire.

A solenoid is a coil of wire which produces a magnetic field, similar to that of a bar magnet, when it has an electrical current.

Solenoids have a uniform magnetic field inside the coil of wire and a non-uniform magnetic field outside the coil, similar to that of a bar magnet.

The magnetic field is strongest inside the coil.

Solenoids are not magnets themselves, but they are part of an electromagnet. To turn a solenoid into an electromagnet it needs a soft iron core.

The strength of a solenoid depends upon:

The current in the coil - The greater the current the stronger the magnetic field.
The number of coils - The greater the number of coils the stronger the magnetic field.


This diagram shows the magnetic field lines of a solenoid. The inside of the solenoid has a uniform magnetic field.

@@ Line 17: / Line 17: @@
 |[[File:MagneticFieldLinesSolenoid.png|center|500px]]
 |-
-| style="height:20px; width:200px; text-align:left;" |This [[diagram]] shows the [[Magnetic Field|magnetic field lines]] of a [[solenoid]].
+| style="height:20px; width:200px; text-align:left;" |This [[diagram]] shows the [[Magnetic Field|magnetic field lines]] of a [[solenoid]]. The inside of the [[solenoid]] has a uniform [[Magnetic Field|magnetic field]].
 |}