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The strength of a magnetic field around a wire is directly proportional to the current flowing through the wire. Increasing the current flow increases the strength of the magnetic field, while increasing the distance from the wire decreases the strength of the magnetic field. This relationship follows the right-hand grip rule, where the direction of the magnetic field is determined by the direction of the current flow.
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Where is the edge of a magnetic field?
The edge of a magnetic field is typically considered to be where the field strength diminishes significantly. It can be defined as the point where the influence of the magnetic field becomes negligible or comparable to the background magnetic field in the area. The specific location of the edge of a magnetic field can vary depending on the strength and orientation of the magnetic source.
How is the magnetic field of an eletromagnet controlled?
The intensity of the magnetic field (measured in Teslas) produced by an electromagnet is directly proportional to the current (measured in Amperes) passing through it's coil windings. Therefore, as long as other variables remain constant, one can vary the intensity of the magnetic field by varying the current. Specifically, the intensity of the magnetic field will vary by the same factor as the current, so if the current is halved, the intensity of the magnetic field will also be halved; and if the current is tripled, the intensity of the magnetic field will also be tripled.
What is a region force around a magnet?
A region of force around a magnet refers to the magnetic field produced by the magnet, which exerts a force on other magnets or magnetic materials within its influence. The strength and direction of the magnetic force vary depending on the position and orientation relative to the magnet.
What is the region called where magnetic force can be felt?
The region where magnetic force can be felt is called a **magnetic field**. This field surrounds magnetic materials and electric currents and exerts a force on other nearby magnets, magnetic materials, and moving electric charges. The strength and direction of the magnetic field can vary, but it extends outward from the source of the magnetic force.
What is the known magnitude of earth's magnetic field?
The known magnitude of Earth's magnetic field at the surface is about 25 to 65 microteslas. This field strength can vary slightly depending on the location on Earth and over time due to changes in the planet's core.
Where is the edge of a magnetic field?
The edge of a magnetic field is typically considered to be where the field strength diminishes significantly. It can be defined as the point where the influence of the magnetic field becomes negligible or comparable to the background magnetic field in the area. The specific location of the edge of a magnetic field can vary depending on the strength and orientation of the magnetic source.
How is the magnetic field of an eletromagnet controlled?
The intensity of the magnetic field (measured in Teslas) produced by an electromagnet is directly proportional to the current (measured in Amperes) passing through it's coil windings. Therefore, as long as other variables remain constant, one can vary the intensity of the magnetic field by varying the current. Specifically, the intensity of the magnetic field will vary by the same factor as the current, so if the current is halved, the intensity of the magnetic field will also be halved; and if the current is tripled, the intensity of the magnetic field will also be tripled.
What is a region force around a magnet?
A region of force around a magnet refers to the magnetic field produced by the magnet, which exerts a force on other magnets or magnetic materials within its influence. The strength and direction of the magnetic force vary depending on the position and orientation relative to the magnet.
What is the region called where magnetic force can be felt?
The region where magnetic force can be felt is called a **magnetic field**. This field surrounds magnetic materials and electric currents and exerts a force on other nearby magnets, magnetic materials, and moving electric charges. The strength and direction of the magnetic field can vary, but it extends outward from the source of the magnetic force.
What is net magnetic field?
The net magnetic field refers to the combined magnetic field resulting from the contribution of multiple magnetic sources in a given space. It is calculated by summing up the magnetic fields generated by individual sources or components present in the region. The net magnetic field's strength and direction can vary depending on the orientation and magnitude of the contributing magnetic fields.
What are two primary differences between an electromagnets magnetic field and earths magnetic field?
First one is artificial where as the latter is natural We could increase or decrease the strength of magnetic field but we cannot vary earth's Intense field could be produced but earth's field is feeble in comparison with artificial
What is the known magnitude of earth's magnetic field?
The known magnitude of Earth's magnetic field at the surface is about 25 to 65 microteslas. This field strength can vary slightly depending on the location on Earth and over time due to changes in the planet's core.
Why is dc current used in the excitation of generator?
The field current is used for the excitation of generators.AnswerYou use DC current, because you want the resulting magnetic field to be constant. If you used AC, the resulting magnetic field would vary in both strength and direction.
What kind of magnet can vary its strength and polarity?
An electromagnet can vary its strength and polarity by controlling the flow of electric current through its coil. By changing the direction and intensity of the electrical current, an electromagnet can easily adjust its magnetic field characteristics.
Definition of uniform-magnetic field?
A uniform magnetic field is a magnetic field that has the same strength and direction at all points in a given region of space. It has constant magnetic flux density and does not vary in magnitude or direction within the specified area. Uniform magnetic fields are often used in scientific experiments and applications to provide consistent and predictable conditions for studying magnetic effects.
How strong is the sun's magnetic field?
Earth's magnetic field (and the surface magnetic field) is approximately a magnetic dipole, with the magnetic field South pole near the Earth's geographic north pole (see Magnetic North Pole) and the other magnetic field N pole near the Earth's geographic south pole (see Magnetic South Pole). This makes the compass usable for navigation. The cause of the field can be explained by dynamo theory. A magnetic field extends infinitely, though it weakens with distance from its source. The Earth's magnetic field, also called the geomagnetic field, which effectively extends several tens of thousands of kilometres into space, forms the Earth's magnetosphere. A paleomagnetic study of Australian red dacite and pillow basalt has estimated the magnetic field to be at least 3.5 billion years old.
What type of metal can repel a magnet?
All metals can repel a magnet. The degree to which they do so is dependent on whether they are ferromagnetic, paramagnetic, or diamagnetic.A ferromagnetic metal is one which has a magnetic field regardless of whether or not they are subjected to an applied or external magnetic field. These are often called permanent magnets. The strength of their magnetic field varies depending on the strength of the external magnetic field, but has a limit outside of the external field. Iron is an example of a ferromagnetic metal.A paramagnetic metal is one which has a magnetic field only when subjected to an applied or external magnetic field. The strength of a paramagnetic metal's magnetic field tends to vary proportionally with the external magnetic field, and so these are often the strongest magnets that we see. An electromagnet is the easiest way to conceptualize the way a paramagnetic metal works. When an electromagnetic circuit is turned on, it's a magnet, when it's turned off, it's not. Tungsten is an example of a paramagnetic metal.Diamagnetism is a property of all materials, not just metals. This property is kind of hard to explain classically, so just think of it as a material's magnetic field created, when subjected to an external magnetic field, because of all of the material's electrons being pulled one way, and all of the material's protons being pushed the other way. The strength of a magnetic field from a purely diamagnetic material is farweaker than that of a paramagnetic or ferromagnetic material's magnetic field.
