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An electromagnet only retains major magnetic properties when a current is being run through it.
Answer
Whether a material makes a permanent or temporary magnet depends on the nature of the ferromagnetic material involved. For example a coil with a steel core will retain much of its magnetic flux density when the current is switched off, whereas a coil with an iron core will lose most of its magnetic flux density when the current is switched off.
What else can I help you with?
How do you know that is not a huge permanent magnet earths core?
Scientists have studied the Earth's core extensively using seismic waves and magnetic field measurements. The data show that the Earth's core is primarily made of molten iron and nickel, rather than a solid permanent magnet. Additionally, the Earth's magnetic field is generated by the movement of molten metals in the outer core, not by a single large permanent magnet in the core.
What Extends from earths core to earths crusts?
idek what 2 say???
Is the earths core cooler than the crust and mantle?
No, the core is hotter.
Is Venus a permanent magnet?
No.-----The earth has an important magnetic field.No, Earth would lose its magnetic field if its molten iron core were not moving. Scientists speculate that Mars had a magnetic field a long time ago but lost it when the planet cooled to the point that its core solidified.
What is the radious of the earths inner core?
The radious of the inner core is 1,220km(760miles).
How do you know that there is not a huge permanent magnet at the earths core?
For one, the magnetic field changes continuously; this is not consistent with a permanent magnet.
How do you know that is not a huge permanent magnet earths core?
Scientists have studied the Earth's core extensively using seismic waves and magnetic field measurements. The data show that the Earth's core is primarily made of molten iron and nickel, rather than a solid permanent magnet. Additionally, the Earth's magnetic field is generated by the movement of molten metals in the outer core, not by a single large permanent magnet in the core.
What has electromagnets in it?
a school bell, the earths core and a junkyard magnet
What has an electromagnet in it?
a school bell, the earths core and a junkyard magnet
Type of magnet?
There are two main types of magnet - Permanent and electromagnet. Electromagnets are usually in the form of a coil wound around an iron core. When current passes through the coil the core becomes magnetic. A permanent magnet is made of a material that naturally exhibits magnetic properties.
Can the earth be a permanent magnet?
No, the Earth is not a permanent magnet. Earth's magnetic field is generated by the movement of molten iron and nickel in its outer core, creating a magnetic field that fluctuates in both strength and direction over time. It is not a fixed or permanent magnet like a bar magnet.
What is the difference between the earths magnetic field and a bar magnet?
The Earth's magnetic field is generated by the movement of molten iron in the outer core, while a bar magnet is a permanent magnet made of a material that can be magnetized, such as iron. The Earth's magnetic field is much weaker and more complex than that of a bar magnet, which has a consistent north and south pole.
What is a non permanent magnet?
An electromagnet (a coil around a soft iron core) will only be magnetic when current changes in the coil and so is not permanent.
Are you closer to the earths core or moons surface when standing at sea level?
Earth's core
What makes the permanent magnet create its field?
I believe the earth's core creates friction as it the earth rotates and that generates the field. Not 100% on that though.
The possible source of earths magnetic core is?
The molten iron and medals inside the earths core are the reasons for the earths magnetic core.
Is there a bunny in the earths core?
no it is not true. there is solid iron and nickel in the Earths core
