Define the magnets, Physics

Assignment Help:

Define the Magnets

Magnets work according to rules similar to electric charges. All magnets have two poles, north (actually north-seeking) and south poles. Like poles repel and unlike poles attract. If you break a magnet in two, you get two magnets, each with a north and south pole. Try it yourself - but not with your brother's favorite magnet.

1218_Magnets 1.png

Modern theories of magnetism explain magnetic materials as  materials in which the magnetic domains in the material are aligned. Magnetic domains are each about an area of about 10 m by 10 m or 1020 atoms or molecules of the material. The more consistently these domains line up, the stronger the magnetic field of the material. This helps us explain why dropping or heating magnets can weaken them. Dropping a magnet can realign its domains. Kinetic theory explains that as a material is heated up, the atoms gain more vibration energy, which can also randomize the alignment of a material's magnetic domains.

Magnetic materials are ones that are attracted to a magnet such as iron, nickel and steel. Some of these materials can be temporarily magnetized by contact with a strong magnet. Nonmagnetic materials are ones not affected by a magnet such as glass, wool, aluminum or brass.

39_Magnets 2.png


Related Discussions:- Define the magnets

Determine the value of vector field, Determine the value of ‘a' for which t...

Determine the value of ‘a' for which the vector field  is solenoidal.

Hall effect, Hall effect: While charged particles pass through a tube ...

Hall effect: While charged particles pass through a tube that has both an electric field & a magnetic field (perpendicular to the electric field) exist in it, only certain vel

Find the maximum possible efficiency of cycles, High temperatures and press...

High temperatures and pressures are given for the following power plants. ISU co-generation:   400 psi, 750F City of Ames with RDF:   700 psi, 850F Super-critical power pl

Electromagnetic theory, compare the contributions of faraday and oersted to...

compare the contributions of faraday and oersted to electromagnetic theory

Explain angle of deviation, Angle of Deviation: When a ray of light pas...

Angle of Deviation: When a ray of light passes by a prism, It changes it's path inside the prism and forms an angle with the emergent ray. This angle is called as the angle of

How many integers satisfy the inequality, How many integers satisfy the ine...

How many integers satisfy the inequality |10(x+1)/x^2+2x+3|=1?

In which one units electric current may be expressed, Electric current may ...

Electric current may be expressed in which one of the following units? a)  coulombs/volt b)  joules/coulomb c)  coulombs/second d)

Carbon ceramic resistor, MANUFACTURING: R esistive element is prepared...

MANUFACTURING: R esistive element is prepared in carbon composition, but the filler used is ceramic powder. The sheet resistance is controlled by changing the quantity of carb

Flashlight, Why are some flashlights brighter than others?

Why are some flashlights brighter than others?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd