- What is an example of a magnetic field?
- Can magnets damage the brain?
- Why can’t magnetic field lines cross?
- How do you direct a magnetic field?
- Which is more powerful permanent magnet or electromagnet?
- What is the largest magnetic field?
- Where is a magnetic field strongest?
- How much magnetic field is dangerous?
- How do you describe a magnetic field?
- Are 2 magnets stronger than 1?
- What is the strongest star in the universe?
- How can a magnetic field be created?
- What is a strong magnetic field?
- What is the strongest magnetic field in the Universe?
- Can you block a magnetic field?
- Can we use the Earth’s magnetic field to generate electricity?
- What are 5 facts about magnets?
- Can a magnetar kill you?
- What is the strongest magnet on Earth?
- Is the Earth’s core magnetic?
- Does the human body have a magnetic field?
- What objects have magnetic fields?
- What is the most dangerous thing in the universe?
What is an example of a magnetic field?
Examples of magnetic force is a compass, a motor, the magnets that hold stuff on the refrigerator, train tracks, and new roller coasters.
All moving charges give rise to a magnetic field and the charges that move through its regions, experience a force..
Can magnets damage the brain?
Magnets have a maximum field of about 1 Tesla which is too weak to have any effect on the brain. … Those can have effects on the brain since any motion of the head or just the blood flow ceases electric currents from blood motion in magnetic field.
Why can’t magnetic field lines cross?
Magnetic field lines can never cross, meaning that the field is unique at any point in space. Magnetic field lines are continuous, forming closed loops without beginning or end. They go from the north pole to the south pole.
How do you direct a magnetic field?
6 Answers. Yes, it is possible to guide magnetic field lines using a shaped magnetic material. Just as field lines concentrate when entering the south pole of a magnet from a large area, an external magnetic field can be “gathered” using, for example, a cone-shaped piece of iron.
Which is more powerful permanent magnet or electromagnet?
Strengths of permanent and electromagnets The strength of a magnetic field of an electromagnet depends on the core material, the number of solenoid windings and the intensity of the current. With a high enough amperage the electromagnet can develop a significantly stronger magnetic field than a permanent magnet.
What is the largest magnetic field?
A group of scientists at the University of Tokyo has recorded the largest magnetic field ever generated indoors—a whopping 1,200 tesla, as measured in the standard units of magnetic field strength.
Where is a magnetic field strongest?
north poleThe magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.
How much magnetic field is dangerous?
A continuous exposure limit of 40 mT is given for the general public. Static magnetic fields affect implanted metallic devices such as pacemakers present inside the body, and this could have direct adverse health consequences.
How do you describe a magnetic field?
A magnetic field is a vector field (more precisely a pseudovector field) that describes the magnetic influence of electric charges in relative motion and magnetized materials. A charge that is moving parallel to a current of other charges experiences a force perpendicular to its own velocity.
Are 2 magnets stronger than 1?
Two magnets together will be slightly less than twice as strong as one magnet. When magnets are stuck entirely together (the south pole of one magnet is connected to the north pole of the other magnet) you can add the magnetic fields together.
What is the strongest star in the universe?
MagnetarA magnetar is a type of neutron star believed to have an extremely powerful magnetic field (∼109 to 1011 T, ∼1013 to 1015 G). … Like other neutron stars, magnetars are around 20 kilometres (12 mi) in diameter and have a mass 1–2 times that of the Sun.More items…
How can a magnetic field be created?
The Source of Magnetic Fields A magnetic field can be created by running electricity through a wire. All magnetic fields are created by moving charged particles. Even the magnet on your fridge is magnetic because it contains electrons that are constantly moving around inside.
What is a strong magnetic field?
A magnetic field exerts a sideways force on a moving electric charge, causing it to turn sideways. … Therefore, strong enough magnetic fields have the ability to deform and even break objects. When a magnetic field gets stronger than about 500,000 Gauss, objects get ripped to pieces by the intense forces.
What is the strongest magnetic field in the Universe?
Magnetars are the bizarre super-dense remnants of supernova explosions and the strongest magnets known in the universe. View full size. Artist’s impression of the magnetar in the star cluster Westerlund 1.
Can you block a magnetic field?
There is no known material that blocks magnetic fields without itself being attracted to the magnetic force. Magnetic fields can only be redirected, not created or removed. To do this, high-permeability shielding alloys are used. The magnetic field lines are strongly attracted into the shielding material.
Can we use the Earth’s magnetic field to generate electricity?
Actually, it’s possible to use the Earth’s magnetic field to generate electricity. A satellite in the form of large diameter loop in orbit around the Earth will generate a current in that loop, and could be used to power something, but at the cost of a rapidly degrading orbit.
What are 5 facts about magnets?
8 Strange Facts About Magnets and MagnetismMagnets always have two poles — even if you cut them in half. … The most powerful magnet in the universe is actually a star called a magnetar. … Strong rare earth magnets can turn some metals into magnets. … The Earth is like one big bar magnet.More items…•
Can a magnetar kill you?
Magnetars are neutron stars with magnetic fields so powerful that they could kill a person from 1,000 kilometers away by warping the atoms in living flesh. Magnetars can also unleash powerful flares that would pose a threat at much larger distances.
What is the strongest magnet on Earth?
neodymiumThe strongest permanent magnets in the world are neodymium (Nd) magnets, they are made from magnetic material made from an alloy of neodymium, iron and boron to form the Nd2Fe14B structure.
Is the Earth’s core magnetic?
The core of the Earth is also an electromagnet. Although the crust is solid, the core of the Earth is surrounded by a mixture of molten iron and nickle. The magnetic field of Earth is caused by currents of electricity that flow in the molten core.
Does the human body have a magnetic field?
The human body produces complex electrical activity in several different types of cells, including neurons, endocrine, and muscle cells – all called “excitable cells”. As all electricity does, this activity also creates a magnetic field.
What objects have magnetic fields?
Household Objects That Use MagnetsHome Audio Speakers. The speakers in your stereo contain magnets. … Motorized Household Appliances. Your vacuum cleaner has an electric motor that runs by magnetism. … Cabinet Door Latch. The doors to many medicine cabinets have a magnetic latch. … Blocks, Trains and Other Toys. … Debit and Credit Cards.
What is the most dangerous thing in the universe?
Yet if Swift-Tuttle were to strike Earth, it would release more than one billion MegaTons of energy: the energy equivalent of 20,000,000 hydrogen bombs exploding all at once. Without a doubt, the comet that gives rise to the Perseids is far and away the single most dangerous object known to humanity.