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Can a magnetic field be separated by a piece of ferromagnetic material?
Yes
Does coil of wire with current passing through it magnetise a piece of iron?
yes it does the current flows in a wire it creates a magnetic field around the wire.
How can metal become a temporary magnet?
By putting metal piece in contact of other magnet or magnetic field.
A north pole will attract a piece of unmagnetised steel?
Only by inducing a magnetic field within the "unmagnetised steel".
Why two wires carrying current do not attract each other yet there are magnetic field around both the wires?
because the poles aren't defined. You create an electomagnet by coiling wire, and putting a piece of metal through it. Just the wire straight will cause magnetic field lines around the wire and as current goes up and down lines will move causing induction in neighbouring wires but that the extent of affect between wires. Without poles there is no opposite attract situation. The pole will constantly want to be ahead of the wire and the current will be constantly pushing it away. The metal defines poles plus directs the field lines.
What is the principle of electromagnetism?
pricinples of electromagnetism state that when current passes through a piece of wire magnetic field is generated around the piece of wire and when a piece of wire passes through the magnetic field current is induced into the piece of wire
What is the three principle of electromagnet?
pricinples of electromagnetism state that when current passes through a piece of wire magnetic field is generated around the piece of wire and when a piece of wire passes through the magnetic field current is induced into the piece of wire
A piece of magnetic material that retains its magnetic properties after it is removed from a magnetic field?
That's a "permanent" magnet.
Can a magnetic field be separated by a piece of ferromagnetic material?
Yes
What is a electronic and magnetic?
It depends what you mean, but.... ---- Magnetic ---- it could be when you make something magnetic, or when the magnetic field of a magnet attracts a piece of Iron or steel
How do you calculate the magnetic field strength in an injector cyclotron?
- Magnetic field strength is the intensity of a magnetic field at a given location. Historically, a distinction is made between magnetic field strength H, measured in ampere/meter, and magnetic flux density B, measured in tesla. Magnetic field strength is defined as the mechanical force (newton) on a wire of unit length (m) with unit electric current(A). The unit of the magnetic field, therefore, is newton/ (ampere x meter), which is called tesla. The magnetic field may be visualized by magnetic field lines. The field strength then corresponds to the density of the field lines. The total number of magnetic field lines penetrating an area is called magnetic flux. The unit of the magnetic flux is tesla x m2 = weber. The older units for the magnetic flux, maxwell = 10-8 weber, and for the magnetic flux density, gauss = maxwell / cm2 = 10-4 tesla, are not to be used any more. Magnetic flux density diminishes with increasing distance from a straight current-carrying wire or a straight line connecting a pair of magnetic poles around which the magnetic field is stable. At a given location in the vicinity of a current-carrying wire, the magnetic flux density is directly proportional to the current in amperes. If a ferromagnetic object such as a piece of iron is brought into a magnetic field, the "magnetic force" exerted on that object is directly proportional to the gradient of the magnetic field strength where the object is located. ------------------------------------------------------------------- B=μH Magnetic field in Solenoid B=μnI where n is turns/m So H=nI --------------------------------------------
A magnetic field can be diverted by a separate piece of ferromagnetic material?
Yes
Why are lodestones magnetic and limestones rocks are not?
A lodestone is a magnetized piece of rock. They are made of made of magnetite, a type of iron ore. For a piece of magnetite to be magnetic, it must be exposed to a magnetic field.
Electromagnets are created using what?
An electric current flowing in a wire creates a magnetic field around the wire. To concentrate the magnetic field of a wire, in an electromagnet the wire is wound into a coil, with many turns of wire lying side by side. The magnetic field of all the turns of wire passes through the center of the coil, creating a strong magnetic field there. A coil forming the shape of a straight tube (a helix) is called a solenoid; a solenoid that is bent into a donut shape so that the ends meet is called a toroid. Much stronger magnetic fields can be produced if a "core" of ferromagnetic material, such as soft iron, is placed inside the coil. The ferromagnetic core magnifies the magnetic field to thousands of times the strength of the field of the coil alone. This is called a iron-core electromagnet.
What is a piece of magnetic material that remains its magnetic proporties after it is removed form a magnetic field?
Many materials which are capable of being effected by a magnetic field will retain some of those properties once its no longer in direct contact with the field. One example is iron. It can become magnetized by being introduced to a magnetic field and then continue to remain magnetic once the source field is removed.
What are the 2 pieces of evidence that there is a magnetic field around a magnet?
1.It attracts iron fillings and iron-made substances. 2.It repels or attracts another magnet when brought near to it. Experimental Evidence-By using a magnetic compass we can obtain the imaginary lines of magnetic field on a piece of paper.
Does coil of wire with current passing through it magnetise a piece of iron?
yes it does the current flows in a wire it creates a magnetic field around the wire.
