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a magnetically soft material can be a magnetically "charged" by exposing it to a very large electromagnetic field (around 600 volts and various currents according to 'how it works') In another definition, a small current can be used to temporarily magnetise a magnetically soft material (iron, nickel or cobalt) some magnetism may remain in the object after current is removed, too.
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How can a magnet be used to create an electric current using the words magnetic field attract repel magnetic poles?
A magnet cannot use words to create an electric current. A moving magnet will induce electric current in adjacent conductors. This is usually described in terms of the rate that magnetic flux lines connecting the opposite poles of the magnet "cut" the conductors. The more flux lines cutting the conductors per second, the more current induced.
What is the difference between magnet and magnetic and magnatism?
A magnet is an object that is magnetic if it displays magnetic properties. Think of it like this; If bar magnet attracts a piece of metal towards it, it is using magnetism (fluxuations in electric current) and therefore the magnet can be said to have magnetic properties.
How do you strengthen a magnet?
You can strengthen a magnet by exposing it to a strong magnetic field, either by placing it near another strong magnet or using an electromagnet. You can also induce a current in the magnet by tapping it with a hammer or passing an electric current through it to realign its magnetic domains and increase its strength.
Can you make a magnet without using a magnetic material Explain?
If you are referring to a magnet as an object that possesses a permanent magnetic field, then yes. There are three circumstances where magnetic fields exist, but not as a result of a permanent magnet. 1. Electric current causes a magnetic field. Thus, any wire carrying a current or even a current without a wire (like a lightning bolt) will be surrounded by a magnetic field. Since electric current is made up of moving electric charges, it is actually true than any moving electric charge creates a magnetic field. 2. It is difficult to observe outside of a scientific laboratory, but when there is an electric field that is varying in time, that creates a magnetic field. Though not easy to demonstrate directly, this turns out the physical phenomena the allows the creation of elecrtromagnetic waves, e.g. like the light we see with our eyes. 3. Thirdly, one can cause materials that are not able to work as permanent magnets to act as temporary magnets. This is the basis for electromagnets. A steel or iron core with an electric current running through a coil surrounding the core will produce a magnetic field. If you simply cut off the power source, the electric current will no longer flow through the coil. No electric current, no magnetic field. When a non-permanent magnet is created, the magnetic field it produces is just the same as the magnetic field of a permanent magnet, until the source is removed and the field disappears. All of these matters together are an essential part of the basics of electromagnetism which describes how and why the phenomena work.
How do you measure the value of the amplitude of an electric current?
The value of the amplitude of an electric current is measured in amperes (A) using a tool called an ammeter. The ammeter is connected in series with the circuit to measure the flow of current. The reading on the ammeter displays the amplitude value of the current.
What is a magnet created using electric current?
An electromagnet. Unlike other magnets it can be switched on and off.
How does an electric generator work to convert mechanical energy into electrical energy?
An electric generator works by using a magnet and a coil of wire to convert mechanical energy into electrical energy. When the coil of wire rotates within the magnetic field created by the magnet, it generates an electric current. This current can then be used to power electrical devices.
What is a temporary magnet produced using an electrical current?
A temporary magnet produced using an electric current is an electromagnet. When an electric current flows through a coil of wire wrapped around a magnetic core, such as iron, it generates a magnetic field. This magnetic field allows the electromagnet to attract and hold magnetic materials like iron or steel.
What is a temporary magnet made using electric current usually running around a metal core?
An electromagnet is a temporary magnet made using electric current running around a metal core. The magnetic field can be turned on and off by controlling the flow of current. Electromagnets are commonly used in various applications such as electric motors, MRI machines, and speakers.
How can a magnet be used to create an electric current using the words magnetic field attract repel magnetic poles?
A magnet cannot use words to create an electric current. A moving magnet will induce electric current in adjacent conductors. This is usually described in terms of the rate that magnetic flux lines connecting the opposite poles of the magnet "cut" the conductors. The more flux lines cutting the conductors per second, the more current induced.
How can you induce current in a wire using a permanent magnet?
By moving the wire perpendicular to the magnetic field lines created by the permanent magnet, you can induce a current in the wire through electromagnetic induction. The changing magnetic field as the wire moves induces an electric field, resulting in a current flow in the wire according to Faraday's law.
How can electricity be produced using a magnet and wire coil?
Electricity can be produced by moving a magnet through a wire coil, which induces a current in the coil. This process is known as electromagnetic induction and is the basis for how generators work to produce electricity. The moving magnetic field created by the magnet interacting with the wire coil creates an electric current to flow in the wire.
What are 2 ways to increase the amount of electric current produced by a magnet?
One way to increase the amount of electric current produced by a magnet is to increase the strength of the magnetic field. This can be done by using a stronger magnet or increasing the number of turns in the wire coil. Another way is to increase the speed at which the magnetic field changes, which can be achieved by moving the magnet or the wire coil faster.
How do you make electricity using only a magnet?
Electricity can be generated using a magnet in combination with a coil of wire. When the magnet moves past or through the coil, it induces an electric current in the wire due to electromagnetic induction. This phenomenon is the basis of how generators produce electricity in power plants and electric motors convert electrical energy into mechanical energy.
How do you produce electricity using a magnet and a wire coil?
By moving a magnet through a wire coil, an electric current is induced in the wire due to electromagnetic induction. This current is generated as a result of the changing magnetic field produced by the moving magnet cutting across the wire coil. This process converts mechanical energy (movement of the magnet) into electrical energy (current in the wire).
What is the difference between magnet and magnetic and magnatism?
A magnet is an object that is magnetic if it displays magnetic properties. Think of it like this; If bar magnet attracts a piece of metal towards it, it is using magnetism (fluxuations in electric current) and therefore the magnet can be said to have magnetic properties.
How do you strengthen a magnet?
You can strengthen a magnet by exposing it to a strong magnetic field, either by placing it near another strong magnet or using an electromagnet. You can also induce a current in the magnet by tapping it with a hammer or passing an electric current through it to realign its magnetic domains and increase its strength.
