Magnetism
This presentation is the property of its rightful owner.
Sponsored Links
1 / 41

Magnetism PowerPoint PPT Presentation


  • 88 Views
  • Uploaded on
  • Presentation posted in: General

Magnetism. Magnetic field- A magnet creates a magnetic field in its vicinity. Magnetism. It represents the effect a magnet has on its surroundings. Magnetism. All magnetic fields arise from the motion of electric charge. Magnetism.

Download Presentation

Magnetism

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Magnetism

Magnetism

Magnetic field-

A magnet creates a magnetic field in its vicinity.


Magnetism

Magnetism

It represents the effect a magnet has on its surroundings.


Magnetism

Magnetism

All magnetic fields arise from the motion of electric charge.


Magnetism

Magnetism

Magnetic field lines can be used to represent magnetic fields.

The closer the lines are together, the greater the magnitude of the vector


Figure 22 4 magnetic field lines for a bar magnet

Figure 22-4 Magnetic Field Lines for a Bar Magnet


Magnetism

Magnetism

A magnetic field is represented by the symbol


Magnetism

Magnetism

The direction of a magnetic field

at a given location is the direction in which the north pole of a compass points when it is placed in that location.


Magnetism

Magnetism

A charged particle moving in a magnetic field will experience a force if it has a velocity component perpendicular to the magnetic field.


Magnetism

Magnetism


Magnetism

Magnetism

The Magnetic Force Right Hand Rule (RHR)


Magnetism

Magnetism


Figure 22 8 the magnetic force right hand rule

Figure 22-8The Magnetic Force Right-Hand Rule


Figure 22 9 the magnetic force for positive and negative charges

Figure 22-9The Magnetic Force for Positive and Negative Charges


Conceptual checkpoint 22 2 which is the positive negative zero charge

Conceptual Checkpoint 22-2Which is the positive? Negative? Zero charge?


Magnetism

Magnetism

Velocity selector.

A device with both magnetic and electric fields present. Only charged particles moving with a certain speed will pass through undeflected.


Magnetism

Magnetism


Conceptual checkpoint 22 3 which direction should the magnetic field be to give zero force

Conceptual Checkpoint 22-3Which direction should the magnetic field be to give zero force?


Magnetism

Magnetism

A charged particle moving with a velocity perpendicular to a uniform magnetic field, will move in a circle.


Figure 22 11 the electromagnetic flowmeter

Figure 22-11The Electromagnetic Flowmeter


Magnetism

Magnetism


Magnetism

Magnetism


Magnetism

Magnetism


Figure 22 12 circular motion in a magnetic field

Figure 22-12Circular Motion in a Magnetic Field


Example 22 3 uranium separation

Example 22-3Uranium Separation


Magnetism

Magnetism

  • Forces on a long straight current carrying wire in a magnetic field.


Magnetism

Magnetism

  • Forces on a long straight current carrying wire in a magnetic field.


Magnetism

Magnetism

  • A long straight current carrying wire has charges moving inside it.


Magnetism

Magnetism

  • If it is placed in a magnetic field, it will experience a force


Magnetism

Magnetism


Magnetism

Magnetism


Figure 22 15 the magnetic force on a current carrying wire

Figure 22-15The Magnetic Force on a Current-Carrying Wire


Magnetism

Magnetism

  • Direction of magnetic forces in a current carrying loop in a magnetic field.


Figure 22 16 magnetic forces on a current loop

Figure 22-16Magnetic Forces on a Current Loop


Example 22 5 torque on a coil

Example 22-5Torque on a Coil


Magnetism

Magnetism


Magnetism

Magnetism


Magnetism

Magnetism

  • To calculate the magnitude and direction of the magnetic field in the vicinity of a long straight current carrying wire.


Magnetism

Magnetism

  • Apply the magnetic field right hand rule.

  • Point your thumb in the direction of current flow.

  • Curl your fingers around the wire

  • They will point in the direction of the magnetic field.


Figure 22 19 the magnetic field of a current carrying wire

Figure 22-19The Magnetic Field of a Current-Carrying Wire


Magnetism

Magnetism


Magnetism

Magnetism


  • Login