I noticed that you asked a CST Testing Practice Fifth Grade Science question. It would be D, because it has the most coils. The more coils, the greater the magnetic field.
The magnitude of the magnetic field around a permanent magnet is greatest at the poles of the magnet. This is where the magnetic field lines are most concentrated and where the magnetic force is strongest.
Electromagnets are only magnetised while the electrical current is switched on.
The magnetic field produced is stronger due to the increased number of wire turns in the coil. The coil shape helps to focus and concentrate the magnetic field within the center of the coil, making it more effective for applications such as electromagnets or transformers.
The magnitude of the magnetic field around a permanent magnet is greatest at the poles of the magnet. This is where the magnetic field lines are most closely packed and the field strength is the highest.
Ferro-magnets, permanent magnets, temporary magnets, and electromagnets. Ferro-magnets are magnets that are magnetic at a higher temperature than room temperature. do not quote me on that. permanent magnets are magnets that are always magnets, they are the kinds you use a lot. Temporary magnets are things that are magnetic in an extrenal magnetic field. Last but not least, electromagnets. Electromagnets are coils of wire around a cobalt, nickel, or iron. When ou run electricity through the wire, the core and wire become magnetic.
Both magnets and electromagnets produce a magnetic field and attract ferromagnetic materials. The magnetic field is created by the alignment of electrons within the material. The main difference is that magnets have a fixed magnetic field, while electromagnets can turn their magnetic field on and off by controlling the flow of electric current.
Electromagnets pull objects towards them by creating a magnetic field when an electric current passes through them. This magnetic field attracts objects made of magnetic materials, causing them to be pulled towards the electromagnet.
Electromagnets produce a magnetic force when an electric current passes through them. This force is the result of the interaction between the magnetic field generated by the current and any nearby magnetic materials or other electromagnets.
Electromagnets work by using electricity to create a magnetic field. This magnetic field can attract or repel objects made of magnetic materials. In modern technology, electromagnets are used in a variety of applications such as electric motors, MRI machines, speakers, and magnetic levitation trains.
Electromagnets are the result of electricity flowing through a coil of wire, creating a magnetic field. This magnetic field can attract or repel objects and can be controlled by adjusting the flow of electricity. Electromagnets are used in various applications, such as in motors, generators, and magnetic resonance imaging.
Yes, some fans use electromagnets in their motors to generate the magnetic field needed for rotation. These electromagnets are energized by an electrical current to produce the desired magnetic force.
Electromagnets and permanent magnets are both capable of producing a magnetic field. The main difference is that electromagnets require an electric current to generate a magnetic field, while permanent magnets retain their magnetic properties without the need for an external electrical source.
Electromagnets are non permanent magnets. They got magnetic field because of applied electric field. They lost their magnetic field which was around that, when the applied electric field is stopped. permanent magnets have magnetic property always with it. Permanent magnetic property loses when we heat the material. It cannot be regained once again. But electromagnets are capable of regaining its magnetic properties.
Electromagnets are the result of electric current flowing through a conductor, producing a magnetic field around the conductor. The magnetic field allows the conductor to attract or repel other objects, making electromagnets useful in various applications such as motors, speakers, and magnetic resonance imaging (MRI) machines.
Electromagnets are different from regular magnets because they require an electric current to create a magnetic field, whereas regular magnets have a permanent magnetic field without the need for electricity.
Electromagnets and other magnets are similar in that they both produce a magnetic field and can attract or repel objects made of magnetic materials. However, electromagnets differ in that they require an electric current to generate their magnetic field, whereas other magnets are permanent and do not need electricity to function.
They are permanent, temporary and electromagnets