Force

Is magnetic flux a magnetic force? Yes, magnetic flux is a magnetic force whereby both are the attributes of the Magnet. Magnetic flux is the entire magnetic field that travels through a precise region. It is a valuable tool for describing the effects of the magnetic force on anything at a selected point.

The magnetic field is the sector wherein moving charges feel the force, and the flux density is the volume of magnetization that pass through it. Magnetic flux measurement is specific to the location chosen. Unit of Flux is Weber 1 Weber = 108 lines of magnetic force.

The spirals encircling the plasma-filled toroidal vacuum system create the toroidal field. (To prevent the plasma from being chilled by exchanges with air particles, it must be placed inside an evacuated chamber.) Designs utilizing cryogenic coils have started to take the place of copper coils to reduce the power inefficiencies in the coils.

Can flux be magnetic force?

The north pole of a compass will repel and spot away from a magnet if it is placed close to the magnet’s north pole. Therefore, the strong magnetic lines of a magnet step away out of its north pole and more towards its south pole. The compass continues to remain subject to magnetic forces, those brought on by the Earth, even after the magnet has been taken out of the equation.

The oscillating magnetic forces generated by the spinning permanent magnets as well as the current shifting of the coils cause vibration to occur through the small air gap when enduring magnet motors and turbines generate torque. Finite element techniques can be used to determine the magnetic force using the flux density and the Maxwell primary standard in cylindrical coordinates.

The source of machinery vibration can indeed be identified via strong magnetic analysis, in addition to the torque that the engine produces as output. In permanent magnet DC rotating machines, travelling magnetic fields cause vibration.

With the assistance of two pairs of magnets, the Maglev train system can drive elevated trains forward by taking full advantage of the absence of friction. One set of magnets is used to repel and drive the level up off the track. To raise, accelerate, and direct a vehicle across a track, maglevs make use of a fundamental magnetic force principle: magnetic poles resist one another while contrary magnetic poles attract one another (or guideway).

How does the fridge door stay shut? The soft magnetic ceramics in the refrigerator magnets, such as barium ferrite as well as strontium ferrite, align the orientations of delocalized electrons in the copper atoms in the refrigerators in a rather way that perhaps the magnet and the refrigerator door are drawn to each other, holding the doors closed.

The major and minor diameters of the plasma in a fusion reactor process called nuclear fusion would be approximately 10 m (33 feet) and 2 to 3 m, respectively. The doughnut-shaped magnetic field’s flux density would be measured in several Tesla, and the plasma flow is in order of 10 million amperes.

What is magnetic Flux?

The overall amplitude of the magnetic field’s structural component, designated as element “B,” as determined over the surface region is called the magnetic flux in the domain of magnetism. The area summation of B above a surface yields the magnetic flux estimate for that surface.

The maximum count of field lines that pass through the confines of the observed closed surface is another way to describe magnetic flux. Both SI unit Weber (Wb), as well as the CGS unit maxwell, is used to describe the magnetic flux, which is also represented by the symbols or B.

The magnetic flux is measured using a device known as a fluxmeter. Because each measurable location in the magnetic flux has a pressure exertion magnitude and direction, it is regarded as a velocity field. Magnetism can be graphically represented as a collection of lines known as field lines. Therefore, it is argued that perhaps the gross volume of field lines on a surface is dependent upon the size of something like the magnetic flux within this area.

To calculate this number of lines, though, one must subtract the number of lines going one way from the number going the other. The magnetic flux density is the difference that was found.

What is magnetic force?

We are aware that excited electrons are flowing in a defined way as a result of the conductor’s current. Each particle travelling in such a conductor or circuit feels a force when it is positioned in the magnetic field.

Consequently, the magneto restrictive force is exerted on the current-carrying wire or conductor. Let’s imagine a charged particle is travelling in a uniform magnetic field at a velocity of v.

The magnetic force is a force that the charge “q” experiences as a consequence of the interplay between both the magnetic field created by strategy should be implemented as well as the magnetism supplied.

How is magnetic flux related to magnetic force?

The magnetic line of force, which has the following characteristics, produces magnetism. The closed-loop is created by the magnetized line of force. The magnetic lines force is north to south in direction. However, inside the magnetic field, they move in the opposite direction, from southwards.

The magnetic lines don’t cross over one another. When parallel and facing the same way, magnetic lines repel one another, the quasi-magnetic substances do not affect one.

Magnetic forces are also used to operate microwave ovens. To provide the energy needed for cooking, they employ a magnetron. A vacuum tube called a magnetron is made to make electrons move around inside the tube in a loop. The magnetic force which enables the electrons to flow in a loop is made by placing a magnet around the tube.

Data is contained using a succession of some very small earth’s magnetic fields in computers, cassette tapes, and credit cards. A magnetic flux oriented either to the north or indeed the south corresponds to the binary numeral units of binary, which computers use to process information.

There is an instance of a hard disc or cassette, these fields are wrapped or spun, making it possible for a magnetized detector to interpret them. The disc has a magnetic layer that is made up of trillions upon trillions of small magnets. Information is recorded in the disc using an electromagnetic head.

Difference between magnetic flux and magnetic force

The main distinctions seen between the magnetic field and magnetic flux are as follows. The magnetic field is a region surrounding a magnetic field in which the polarities and a moving charge encounter the forces of attraction and repulsion. The magnetic flux, on the other hand, displays the proportions of said magnetic lines of force which flow through it.

The magnetic field is computed as the sum of the moving charges’ orientation and magnetic field intensity. In contrast, a magnetic field is indeed the result of the region all-around magnets and the field strength.

The usage of the electromagnetic force, diamagnets, rare-earth magnets, and cryogenic materials are feasible for magnetic levitation locomotion and suspension. When you take a train again, you’ll be shocked to discover that you’re riding on massive magnets.

The SI-derived unit for magnetic flux is Weber, whilst Telsa is the SI unit for a magnetic field. Overall magnetic flux is dependent on the field strength and radius, whereas the magnetic field is solely dependent on the magnet that produces it.

Is magnetic flux density a force?

The magnetic flux is the amount of flux line passing through a given unit area. The quantity of magnetic flux passing over a unit surface area is measured perpendicularly to the magnetic flow’s path.  In simple words it is the orientation and magnetizing force that surrounds a pole or a direct charge.

The conductivity in the area where the force is present multiplied by the magnetic fields gives the magnetic flux density. Equation F = q v B, where q is the quantity of electrical potential, v is the charge’s velocity, B is the magnetic flux intensity at the charge’s position, and is the vector product, describes the force acting on electric charges travelling through a magnetic field.

Problem:

A squared loop with a side of 6 cm is placed in a 0.9 T uniform magnetic field such that the loop’s plane forms a 60° angle with the magnetic field. What flux is present in the square loop?

Solution:

Φm =BAcosθ

= 0.9 x (6 x 6) x cos60

=16.2 mWb

Conclusion

Overall magnetic flux is dependent on the field strength and radius, whereas the magnetic field is solely dependent on the magnet that produces it. Both magnetic fields, as well as magnetic flux, have relationships with one another. Due to the obvious magnetic flow, the magnetic field is produced. Therefore we must know that depending upon the circumstances the magnetic flux and the magnetic force will be same and differ according to the need.

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Does the direction of magnetic force change? the answer to this is as we discuss further. We can discover crucial details about a part of our world that would not otherwise be available by connecting the observable changes to underlying processes.

Reversals, which happen at random periods a few times every million years, have historically been linked to the quickest changes in the Earth’s magnetic field.

But unlike any of the data linked to real reversals, we found field changes that are far faster and more recent.

Does the direction of magnetic field change?

The magnetic force modifies the direction of the particle’s movement but not its speed or kinetic energy. Magnetic force on a wire, Magnetic deflection of electrons in a cathode-ray tube, Magnetic force on a proton.

In regions where the magnetic field was diminishing, Davies and Constable found that the magnetic field may shift by as much as 10 degrees every year. This rate is around 10 times quicker than what prior models predicted and nearly 100 times faster than changes observed in contemporary measurements.

The models demonstrated that the magnetic field direction would abruptly change as parts of the molten core flipped direction. The researchers’ observations of rapid directional changes at low latitudes were consistent with the fact that this core reversal was more frequent in regions near to the equator.

According to the study’s authors, this fresh evidence that low latitudes undergo changes the fastest recommends that scientists should focus their efforts there in the future.

Why does the direction of magnetic force change?

Electromagnetic forces connect electric currents with fluid flow. Additionally, the makeup of the core is probably not uniform. Eddy currents can be produced via electromagnetic induction in addition to the fluid flow carrying charge. Without fairly powerful computers, it is impossible to solve the equations characterizing this extremely complicated system.

The substance which creates the Earth’s outer core is both a liquid and a conductor of electricity. Thermal convection currents give out fluid flow.

The Earth’s magnetic field is “chaotic,” according to numerical simulations, and it frequently changes its polarity and structure. Due to this intricacy, it is possible for the magnetic field to vary without the electric currents’ directions necessarily changing anywhere they are flowing.

A relatively slight change in flow could result in a significant shift (or even a reversal) in the magnetic field because the system is “chaotic.” Despite being simulations, the computer models have been very successful at recreating the secular variation of the magnetic field that we can measure at the Earth’s surface.

How much does the direction of magnetic field change?

The planet’s liquid core produces the magnetic field, with the iron’s whirling movements producing a field that stretches into space. By diverting the solar wind—a stream of charged particles flowing from the sun—it serves as a barrier shielding Earth from the sun’s harmful radiation and aids in maintaining our atmosphere.

Scientists have found that the earth’s magnetic field may shift directions about ten times more quickly than previously assumed. Researchers were able to demonstrate how the field has altered over time by simulating the last 100,000 years of activity. Findings indicated that abrupt changes in direction frequently occur during times of reversal, when the field is locally weak.

The magnetic field is continually shifting because of the liquid core’s movements. The magnetic north and south poles switch positions when it becomes significantly weaker. These eras have been connected to extinctions and are accompanied by elevated radiation. Understanding how, when, and why changes occur is difficult since they occur over incredibly long stretches of time.

How often and when does the direction of magnetic field change?

Since it has a North pole and a South pole, the magnetic field primarily resembles a dipole. A compass needle will be directly down or up in these locations, accordingly. It is frequently said to resemble the field of a bar magnet, such as one seen on a refrigerator. The Earth’s field, which differs greatly from that of a bar magnet, exhibits significant small-scale fluctuation.

Using a magnetic compass will reveal that the Earth has a magnetic field. It is mostly produced in the planet’s extremely hot molten core and has likely existed for the majority of the planet’s history.

It’s interesting to note that sometimes the magnetic field just experiences a “excursion” rather than a reversal.

Here, it experiences a significant loss in overall strength, or the force that propels the compass needle. The field does not reverse during an force; rather, it later regenerates with the same polarity in action, so North pole remains North and South pole remains South.

What changes the magnetic field direction?

Cretaceous Period is usually the time periods which has reversals at every other points in history of earth. Reversals are neither predictable nor, by any means, cyclical. Therefore, we are limited to discussing the average reversal interval.

The Earth’s magnetic field has experienced many polarity reversals throughout its history. This is seen in the magnetic patterns of volcanic rocks, particularly those dug up from ocean floors. Averaging 4 or 5 reversals every million years over the past 10 million years.

For instance, it appears from the mathematical simulations that a complete reversal may take between one and several thousand years to complete. Although sluggish on a human time scale, this is rapid by geological standards.

As mentioned above, there isn’t much information available from geological measurements concerning how the magnetic field changes as it reverses.

 It’s also possible that over time, the poles will “wander” from their present locations towards and across the equator. Anywhere on Earth, the field’s overall power may be no stronger than a tenth of what it is right now.

Right-hand principle

The right-hand rule is simply a convenient technique for physicists to recall the expected directions of motion; it is based on the underlying physics that connects magnetic fields and the forces they exert on moving charges.

To remember the direction of magnetic forces, physicists applied a hand code known as the right-hand rule. Next, point your middle finger such that it is parallel to your index and thumb.

There are times when a physicist will unintentionally use their left hand, leading them to forecast that the magnetic force will point in the wrong direction.

Magnetic Field Change Examples

• Current In Wire
• Magnetic Field Caused By Current In Wire
• The Magnetic Field In MRI

Current In Wire

Since we already know that current is nothing more than moving charges, when a current is flowing through a wire, it will only be impacted by a magnetic field in the same way as a single moving charge.

The movement of positive charges via a wire is what we mean when we talk about conventional current in a wire

The thumb points in the positive xxx direction, the first finger in the positive yyy direction, and the middle finger in the positive zzz direction. This is known as the right-hand rule.

Magnetic Field Caused By Current In Wire

A straight wire’s magnetic field, created by a current flowing through it, forms a ring around the wire. You can locate it by curling your fingers and pointing your right thumb in the direction of the wire’s current. The magnetic field surrounding the wire will cause your fingers to curl in the same direction.

Magnetic fields are not just influenced by moving charges; they can also be produced by moving charges. A second right-hand rule can be used to determine the magnetic field produced by moving charges.

It turns out that if you already know the direction of the magnetic field, you can apply the opposite of this method to determine the direction of the current in a wire.

This time, point your thumb in the magnetic field’s direction, and curl your fingers like you did before. This time, you can determine the direction of the current that generates the magnetic field by looking at the circular motion of your fingers.

The Magnetic Field In MRI

A powerful fixed magnetic field is used to align the individual protons connected to water molecules throughout the body during an MRI, or magnetic resonance imaging, procedure. This alignment procedure is the first stage of a measurement that makes use of tiny proton deviations from the field to map out the structure and density of distinct patient body sections.

In order to perform a basic MRI, a strong magnetic field must be generated along the body’s axis. This is the reason why one design of the gadget features a huge electromagnet coil that encircles the patient’s torso.

The current that spirals around the patient creates a magnetic field that points straight down the patient’s body, as we have learnt from the right-hand rule.

Conclusion

Like we have seen from the above discussion, we know that the magnetic field changes according to the factors. There are so many tings which contributes to the change in the magnetic field. Earth’s magnetic field is the natural occurring and it may very depending upon the factors that affects the action.

Also Read:

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• Force on moving charge in magnetic field
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• Example of unbalanced force