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The Earth's magnetic field is primarily a dipole because it is generated by the movement of molten iron in the outer core. This movement creates electric currents, which in turn generate a magnetic field with north and south poles similar to a bar magnet. This dipole nature of the Earth's magnetic field helps protect the planet from solar wind and cosmic radiation.
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What should be orientation of dipole in magnetic field?
The orientation of a dipole in a magnetic field will align along the direction of the magnetic field. The north pole of the dipole will point towards the south pole of the magnetic field and vice versa, in order to minimize the potential energy of the system.
How do you calculate dipole field?
The magnetic field created by a dipole can be calculated using the formula: B = (μ0 / 4π) * (2m / r^3), where B is the magnetic field strength, μ0 is the permeability of free space, m is the magnetic moment of the dipole, and r is the distance from the dipole.
What is the shape of earth's magnetic field similar to?
The shape of Earth's magnetic field is similar to that of a bar magnet. It has two poles (north and south) and creates a dipole field that extends from the core of the Earth into space, resulting in a roughly symmetrical shape around the planet.
Electric dipole in uniform magnetic field?
An electric dipole consists of two equal and opposite charges separated by a distance. When placed in a uniform magnetic field, the charges experience a force in opposite directions due to their opposite velocities in the field. This results in a torque acting to align the dipole along the field lines of the magnetic field.
How the compass works?
A compass works based on the Earth's magnetic field. The needle in a compass is magnetized and aligns itself with the magnetic field, pointing towards the Earth's magnetic North Pole. This allows users to determine which direction is north, south, east, and west.
If a magnetic dipole is placed in a magnetic field the dipole is found to have both rotational and translational motion.what would you infer about the magnetic field?
If a magnetic dipole placed in a magnetic field exhibits both rotational and translational motion, it suggests that the magnetic field is not uniform. A non-uniform magnetic field will exert torque on the magnetic dipole, causing it to rotate, and may also impart a force causing translational motion. These observations can help characterize the spatial variation of the magnetic field.
What should be orientation of dipole in magnetic field?
The orientation of a dipole in a magnetic field will align along the direction of the magnetic field. The north pole of the dipole will point towards the south pole of the magnetic field and vice versa, in order to minimize the potential energy of the system.
From where earth's dipole field originates?
Earth's dipole magnetic field is thought to originate from the movement of molten iron in its outer core. This movement creates electric currents that generate a magnetic field through a process called geodynamo. The magnetic field then extends from the core to the space around Earth, forming a protective shield known as the magnetosphere.
How do you calculate dipole field?
The magnetic field created by a dipole can be calculated using the formula: B = (μ0 / 4π) * (2m / r^3), where B is the magnetic field strength, μ0 is the permeability of free space, m is the magnetic moment of the dipole, and r is the distance from the dipole.
What is the potential energy of a point magnetic dipole of moment M placed in a uniform magnetic field B?
The potential energy of a magnetic dipole in a magnetic field is given by U = -M · B, where M is the magnetic moment and B is the magnetic field. The negative sign indicates that the potential energy decreases as the dipole aligns with the field.
What is the shape of earth's magnetic field similar to?
The shape of Earth's magnetic field is similar to that of a bar magnet. It has two poles (north and south) and creates a dipole field that extends from the core of the Earth into space, resulting in a roughly symmetrical shape around the planet.
Electric dipole in uniform magnetic field?
An electric dipole consists of two equal and opposite charges separated by a distance. When placed in a uniform magnetic field, the charges experience a force in opposite directions due to their opposite velocities in the field. This results in a torque acting to align the dipole along the field lines of the magnetic field.
How the compass works?
A compass works based on the Earth's magnetic field. The needle in a compass is magnetized and aligns itself with the magnetic field, pointing towards the Earth's magnetic North Pole. This allows users to determine which direction is north, south, east, and west.
What is earth magnetism?
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.
Why force exerted by a magnetic field on stationary elctric dipole is zero?
The force exerted by a magnetic field on a stationary electric dipole is zero because a magnetic field only exerts a force on moving charges. Since the electric dipole is stationary, there is no motion of charges for the magnetic field to act upon, hence no force is experienced.
Does Mercury have a magnetic field?
Yes, Mercury does have a magnetic field, although it is much weaker than Earth's. Scientists believe that Mercury's magnetic field is generated by a dynamo effect in its iron core, similar to Earth's mechanism, but due to the planet's smaller size, the field is about 1% as strong as Earth's.
What is difference between between electric dipole moment and magnetic dipole moment?
An electric dipole moment is a measure of the separation of positive and negative charges in a system, creating an electric field. A magnetic dipole moment, on the other hand, is a measure of the strength and orientation of a magnetic field created by a current loop or a moving charge. In essence, electric dipole moments deal with electric fields generated by charges, while magnetic dipole moments pertain to magnetic fields generated by moving charges.
