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Why is the density of field lines greater at the poles of a magnet than anywhere across it?
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Can magnet pull threw gas?
Yes they can pull across an air gap and air is gases
How does the strength of the magnet affect the current induced?
The strength of the magnet and its proximity effect the current produced. The magnetic flux density falls quickly so it is important to get close. The stronger the magnet the more lines of flux that pass a point as it moves. Or as something passes by it.
What is the centimeters when the magnet and metal paper clip is a strong magnetic?
The least # of centimeters, the greater the magnetic attraction.
Will an objects weight affect whether or not it is attracted to the magnet?
The force of attraction between a magnet and another object is completely unaffected by the object's weight, color, texture, age, density, religion, political affiliation, or gender preference.
What is the relationship between magnet length in the permanent magnet length and the flux density?
Magnetic flux density = mu x magnetizing intensity. ie B = mu H. mu is known as magnetic permeability of the medium. If it is just air or vacuum, then mu is mu0 ie permeability of free space whose value is 4pi x 10 -7 H/m. If it is other than air or vacuum then the permeability will be mur mu0 where mur is known as relative permeability. If mur is less than one then the magnetic material will be dia magnetic. If mur is slightly greater than one then magnetic material is para magnetic. If mur is very much greater than one then magnetic material is ferro magnetic.
Will rod magnet still become a magnet when it cut across into thin slices?
yes.when you slice a rod magnet it will still be considered as a magnet
Does the size of a magnet affect its strength?
Yes. Larger the magnet greater the magnetism. For example: Both the Sun and the Earth are powerful magnets. But the Sun's magnetism is 100 times greater than the magnetism of Earth. This is because the size of the Sun is also about 100 times greater than the Earth.Another AnswerThe intensity of a magnetic field is measured in terms of its flux density, which is defined as the flux per unit area. This corresponds to a weber per square metre('weber' is pronounced 'vay-ber') which, in SI, is given a special name: the tesla.So if a magnet has a given flux, then the smaller the area (perpendicular to the field) of that magnet, the higherits flux density. So the intensity of a magnetic field is a function of both the field (which depends on the type of material from which the magnet is made) itself and the perpendicular area of the magnet.
What happen if vary change the distance between the magnet and the nails?
the closer the magnet is to the nails the greater the magnetic force between the magnet and the nails
How do you calculate the magnetic dipole moment of a bar magnet?
The strength of a magnet can be determined by measuring its flux density (B) which is expressed in teslas. The flux density will vary according to where relative to the magnet it is being measured. The instrument for doing this is a flux-density meter (which was called a 'gaussmeter' - 'gauss' being an obsolete unit of measurement for flux density, from the cgsA metric system).
What is the unit of a magnet?
Tesla is unit of magnetic flux density if that's what you mean
Why each side of a magnet cannot have two poles?
Because the magnetism runs from one end of the magnet to the other - across the whole magnet. You cannot have magnetism running in opposing directions in the SAME magnet.
Which type of magnet would have a greater force between its pole?
Ask the Mormans.
Why isn't a refrigerator magnet that is held across the room attached to the refrigerator door?
Because of the laws of physics. The magnet depending on the size strengh and density of the material loses the ability to still create a positive and negative attraction. Although there is a very miniscule attraction to other magnetic fields around the magnet In hand there will never be enough attraction to slap it back to the fridge. In other words your too far away
Why does earth attract a magnet if magnetic force is greater than the gravitation force?
Earth attracts a magnet because both Earth and the magnet have mass. The force of gravity acts between any objects that have mass.
Does a copper penny move away from a magnet?
No, copper is unaffected by any magnet you're likely to come across (although an extremely powerful magnet - something the size of, say, a car - would have some effect).
Does adding electric currents to something that is already magnetized increase or decrease the power of the magnet?
By 'adding electric currents', you are presumably talking about passing a d.c. current through a coil wound around a magnet?First of all, you cannot increase the flux density of a magnet beyond saturation, regardless of the current or number of turns that make up the coil. Whether on not you increase or reduce the flux density depends on the polarity of the coil compared with the polarity of the magnet; if they are opposite then, yes, you can demagnetise the magnet and, in fact, remagnetise it in the opposite direction.
Why great big whale can float while a small magnet sink in water?
Whales have a much lower density than a magnet. Or another way of putting it, whales are more buoyant. Density is like a mixture of mass and volume. Lets say you have a 1000 pound whale, and a 1000 pound magnet. Their weight(mass) is the same, but the amount of the space they are taking up(volume) is different. Just think of it like there are more air pockets in a whale than in a magnet, causing the magnet to sink but the whale to float.
