# Результаты поиска по запросу "magnetic field of a solenoid":

1. ## Solenoids as Magnetic Field Sources

• Solenoid. A long straight coil of wire can be used to generate a nearly uniform magnetic field similar to that of a bar magnet.
• The expression is an idealization to an infinite length solenoid, but provides a good approximation to the field of a long solenoid.

hyperphysics.phy-astr.gsu.edu

2. ## Magnetic Field of a Solenoid

• The magnetic field generated in the centre, or core, of a current carrying solenoid is essentially uniform, and is directed along the axis of the solenoid. Outside the solenoid, the magnetic field is far weaker.

farside.ph.utexas.edu

3. ## magnetic field outside a solenoid - Physics Stack Exchange

Solenoid just cancels out componets of the field perpendicular to its axis and parallel to the plain of the windings since windings are very close and, though current in them flows in one direction, say forward, upper wire induces left magnetic field between the wires whereas bottom wire produces the same...

physics.stackexchange.com

4. ## Magnetic Field of a Solenoid

iws.collin.edu

5. ## electromagnetism - Why in a solenoid, do the magnetic field lines resemble that of a bar magnet? - Physics Stack Exchange

• Thus the H-fields of a solenoid and a bar magnet are quite different, though they can be similar outside the solenoid. Another way of saying this is that the air-filled solenoid does not have magnetic poles (sources and sinks of H-field), whereas the bar magnet does.

physics.stackexchange.com

6. ## Magnetic field of a solenoid

• This is a derivation of the magnetic field around a solenoid that is long enough so that fringe effects can be ignored. In the diagram to the right, we immediately know that the field points in the positive z direction inside the solenoid, and in the negative z direction outside the solenoid.

web.ua.es

7. ## Magnets and Electromagnets | Iron Core Solenoid

• The magnetic field lines of a bar magnet can be traced out with the use of a compass.
• Comparison of magnetic and electric fields. Compare to solenoid magnetic field.

hyperphysics.phy-astr.gsu.edu

8. ## Solenoid - Wikipedia

• The magnetic field inside an infinitely long solenoid is homogeneous and its strength neither depends on the distance from the axis, nor on the solenoid's cross-sectional area. This is a derivation of the magnetic flux density around a solenoid that is long enough so that fringe effects can be ignored.

en.wikipedia.org

9. ## Toroidal Magnetic Field

• Magnetic Field of Toroid.
• Magnetic field = permeability x turn density x current. For a solenoid of radius r = m with N = turns, the turn density is n=N/(2πr)= turns/m.

hyperphysics.phy-astr.gsu.edu

10. ## Solenoids and Magnetic Fields

• Solenoids and Magnetic Fields. This lecture is based on HRW, Section 30.4. A solenoid is a long coil of wire wrapped in many turns.
• The magnetic field within a solenoid depends upon the current and density of turns.

spiff.rit.edu