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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.
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What is a property of a magnetic field?
One property of a magnetic field is that its divergence is zero. That means that a magnetic field line is always a loop and that the net magnetic field coming out of or going in to an enclosed surface is always zero. The result of this is that there are no magnetic monopoles, at least none discovered. Theories, however, do abound.
How does iron differ in a magnetised and unmagnetised material?
In a magnetized material, the iron atoms align their magnetic fields in the same direction, creating a net magnetic field. This allows the material to attract or repel other magnets. In an unmagnetized material, the iron atoms have random magnetic orientations, resulting in no net magnetic field.
Is iron grouped in magnetic domains?
Yes, iron is grouped into magnetic domains, which are small regions within the material where the magnetic moments of atoms are aligned in the same direction. In the absence of an external magnetic field, these domains are oriented randomly, resulting in no net magnetization. When exposed to a magnetic field, the domains can align, leading to a net magnetic effect, which is why iron is often used in magnets and magnetic materials.
Why are things magnetic?
Things are magnetic when their atoms have aligned magnetic fields that interact with an external magnetic field. This alignment creates a net magnetic field in the material, causing it to attract or repel other objects. Materials such as iron, nickel, and cobalt are particularly magnetic due to the arrangement of their atoms.
What is the type of force in a bar magnet suspended freely?
The type of force in a bar magnet suspended freely is magnetic force. The magnet aligns itself with the Earth's magnetic field, resulting in a net force acting on the magnet.
How magnetic materials are magnetised?
Magnetic materials are magnetized by exposing them to a magnetic field, such as from a magnet or an electromagnet. This causes the magnetic domains within the material to align, creating a net magnetic field. The material retains this magnetic field even after the external field is removed.
What happens when no net force acts on a loop of wire in a magnetic field?
When no net force acts on a loop of wire in a magnetic field, the loop will not experience any acceleration or movement.
What causes a magnetic field with no current?
A permanent magnet can create a magnetic field with no current. This is due to the alignment of the magnetic domains within the material, which results in a net magnetic field. The magnetic field produced can attract or repel other magnets or magnetic materials in its vicinity.
What if a magnetic needle is kept in a non uniform magnetic field?
A magnetic needle kept in uniform magnetic field will experience zero net force but non-zero net torque........Since the magnetic lines are uniform,the force acting on each end of the needlewill be equal and opposite.So it will cancel each other resulting zero net force.
What is a property of a magnetic field?
One property of a magnetic field is that its divergence is zero. That means that a magnetic field line is always a loop and that the net magnetic field coming out of or going in to an enclosed surface is always zero. The result of this is that there are no magnetic monopoles, at least none discovered. Theories, however, do abound.
What is the neutral point of the magnetic field?
The neutral point of a magnetic field is the point in space where the magnetic field intensity is zero. At this point, the magnetic forces acting on a particle will cancel each other out, resulting in no net force. This occurs in regions where magnetic field lines from opposite directions meet and cancel each other.
How can a piece of iron be induced into becoming magnetized?
A piece of iron can be induced to become magnetized by placing it in a magnetic field. The magnetic field aligns the magnetic domains within the iron, creating a net magnetic field in the same direction as the applied field. Once the external magnetic field is removed, the iron will retain some level of magnetization.
How does iron differ in a magnetised and unmagnetised material?
In a magnetized material, the iron atoms align their magnetic fields in the same direction, creating a net magnetic field. This allows the material to attract or repel other magnets. In an unmagnetized material, the iron atoms have random magnetic orientations, resulting in no net magnetic field.
How can magnetism be induced in non magnetic iron?
In a magnetic material that is not a magnet, magnetic domains are arranged in random fashion canceling the net magnetic field. If such a material, like an iron rod, is exposed to a strong magnetic field, the domains will arrange themselves in the direction of the applied field and hence object will become magnetized.
Why are things magnetic?
Things are magnetic when their atoms have aligned magnetic fields that interact with an external magnetic field. This alignment creates a net magnetic field in the material, causing it to attract or repel other objects. Materials such as iron, nickel, and cobalt are particularly magnetic due to the arrangement of their atoms.
What would happen if field lines crossed?
Then, at some point, the field would go into two directions simultaneously, which doesn't make much sense. The magnetic field lines form continuous closed loops.The tangent to the field line at a point represent the direction of the net magnetic field B,at that point.The magnetic field lines do not intersect,if they did, the direction of the magnetic field would not be unique at the point of intersection.
What is the type of force in a bar magnet suspended freely?
The type of force in a bar magnet suspended freely is magnetic force. The magnet aligns itself with the Earth's magnetic field, resulting in a net force acting on the magnet.
