Electrical energy
Any coil produces a magnetic field when it has an electic current passing through it. It's usual to use copper wire, and 1 amp through ten turns has the same effect as ten amps through one turn . . etc.
Before you can understand how electrical energy is supplied by your electric company, you need to know how it is produced. A magnet and a conductor, such as a wire, can be used to induce a current in the conductor. The key is motion. An electric current is induced in a conductor when the conductor moves through a magnetic field. Generating an electric current from the motion of a conductor through a magnetic field is called electromagnetic induction. Current that is generated in this way is called induced current. To induce a current in a conductor, either the conductor can move through the magnetic field or the magnet itself can move.
Yes. The field lines of a bar magnet emerge from one end, curve around, and stop at the other end. The field lines around a current-carrying wire are circles, with the wire passing through their centers.
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.
Temporary magnet: good example is an electromagnet. It maintains magnetic attraction only so long as an electric current surrounds it. Permanent magnet: most common. Example: bar magnet. Will maintain magnetic properties for quite a while, although they can be eventually demagnetized.
electrical energy
By passing a current threw it.
Electrical
This is dependent on: 1. The construction of the Magnet...materials, size, design. 2. The amount of CURRENT flowing through it.
no salt is non magnetic
A Electro Magnet, caused in theory by the alignment of the particles in the material duo to the current passing through it.
you can use magnetic separation by passing a magnet through the copper and iron
The speakers in a mobile phone are driven by passing AC current through a coil in thepresenceof a static magnet transducing the current into kinetic energy by the speaker coil diaphragm.
The EFFECT of steel passing over a magnet can be detected and therefore recorded.
Kinetic energy is converted into electrical energy.
electric magnet
pass electricity through the wire and you'll have an electro magnet.