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About 41,000 years ago.
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About how long ago was the last time earths magnetic field reversed?
About 41,000 years ago.
How long ago did the earths magnetic field reverse itself?
The last time that Earth's magnetic field reversed itself was 780,000 years ago. See the related link for two timelines showing geomagnetic reversals in Earth's history.
What Ancient blank reveal magnetic field blank from long ago?
Ancient pottery reveal magnetic field changes from long ago. By studying the alignment of magnetic minerals in the pottery, researchers can reconstruct past magnetic field intensity and direction, providing insights into the Earth's magnetic field history.
How long does it take for the Earth's magnetic field to reverse?
The Earth's magnetic field can take thousands of years to reverse.
If a wire with no current passes a magnetic field of flux will voltage be induced into the wire?
Yes, for as long as the magnetic field is moving along the conductor. A static magnetic field will not induce current, a dynamic field is required.
What kind of magnet has the same magnetic field as the long coil of wire?
A solenoid magnet, which is a long coil of wire wrapped around a ferromagnetic core, has a similar magnetic field to that of a bar magnet. This is because the magnetic field created by the current flowing through the wire generates a magnetic field similar to that of a bar magnet.
Which kind of magnet field as long coil of wire?
A long coil of wire generates a magnetic field similar to that of a bar magnet, with field lines running parallel to the coil's axis. This type of magnetic field is known as a solenoidal field and is strongest inside the coil, as the magnetic field lines are tightly packed together.
The magnetic field around a solenoid has a configuration similar to the field of a long straight wire?
no
Is the field uniform inside a long solenoid?
Yes, the magnetic field inside a long solenoid is generally uniform.
Which kind of magnet has the same magnetic field as the long coil of wire?
A solenoid, which is a long coil of wire, produces a magnetic field similar to that of a bar magnet when a current passes through it. The magnetic field produced by a solenoid is confined within the coil and has north and south poles along its axis.
A current in a long straight wire produces a magnetic field. These magnetic field lines?
form concentric circles around the wire, with the direction given by the right-hand rule (curl your fingers in the direction of the current, and your thumb points in the direction of the magnetic field). The strength of the magnetic field decreases as you move further away from the wire.
How long to magnetic bracelets last?
theres a theory that a magnet can lose its magnetic energy in about 400 years.
