1 / 10

# Electromagnetism - PowerPoint PPT Presentation

Electromagnetism. Magnetic Field Concept Force on a Current-Carrying Conductor Force on a Moving Charge Magnetic Fields due to Currents. The ABCs of Magnets. Questions. What are magnets? Where were the first magnets discovered? What types of materials do they attract?

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about ' Electromagnetism' - basil

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

### Electromagnetism

Magnetic Field Concept

Force on a Current-Carrying Conductor

Force on a Moving Charge

Magnetic Fields due to Currents

• What are magnets?

• Where were the first magnets discovered?

• What types of materials do they attract?

• Explain “opposites attract” in terms of magnets.

• How did the Chinese make use of magnets?

• What benefit(s) do we get out of magnetism that are mentioned in the video?

• Magnets attract without coming in contact with the objects. How do they do this?

• Magnetic field lines

• Directions of lines

• Earth

• Geographic poles

• Compass

• Magnetic poles

• Current-carrying wires produce magnetic fields

• Corkscrew rule or RHR

• Solenoid carrying a steady current produces a magnetic field

• The solenoid rule

• Force on a

• Mass

• Charged mass

• Charged moving mass

• (Fleming’s) Left-hand Rule

• Equation

• Magnetic Field Strength (Magnetic flux density)

• A straight wire of length 0.25 m carrying a steady current of 4.5 A is placed horizontally in a uniform horizontal magnetic field of strength 85 mT. Calculate the force on the wire due to the magnetic field and the direction of the force if the angle between the wire and the field line is

• (a) 90

• (b) 0

• (c) 60

• The turning effect

• Couple

• Number of turns

• Equation

• The moving coil meter

• The electric motor

• Force on a moving charge

• Circular Motion

• Electron Beams

• Thermionic emission

• Cyclotron