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What else can I help you with?
What 3 things must be present to make an electromagnet?
To make an electromagnet, you need a power source (such as a battery), a conductive wire or coil, and a ferromagnetic core (such as iron). When an electric current flows through the wire, a magnetic field is created in the core, turning it into a magnet.
Why is an electromagnet only a temporary magnet?
Well this is a simple one to explain. A permanent magnet is a magnet that can not be terminated or "switched off". whilst a temporary magnet can. So i ask you can an electromagnet be turned off. The answer is yes it can though it will have a residual magnetic field for a short period due to residual energy within. I hope this helps I must say that I'm surprised that a teacher did not tell you this during your school life unless you have not reached that part of your school life or you were absent or weren't listening. Nun the less I hope this helps you.
What must happen for an electromagnet to have a magnetic field?
An electromagnet must have a current flowing through its coil of wire in order to generate a magnetic field. When an electric current passes through the coil, it creates a magnetic field around the electromagnet.
Is the strength of an electromagnet measured in volts?
That's a tricky question. Well, technically it is not measured in volts. The strength of an electromagnet depends on the electrical current which flows through its wires, but not on what drives that current. The current is measured in the amount of charge per unit time that flows through the wires. But when it comes to measuring the magnet, you have to refer to the magnetic field. Without it, there wouldn't be any "magnet." So, logically, to measure the strength of the magnet you must first measure the strength of the magnetic field. It's strength is measured in Volts per meter(V/m). So to measure the strength of the electromagnet you must measure the strength of the magnetic field whose formula is found in the next to last sentence. Hope this helps.
What must happen for an electromagnet to have a magnetc field?
An electromagnet must have an electric current passing through its coils to generate a magnetic field. The magnetic field is created as the electric current causes the alignment of the magnetic domains within the core material of the electromagnet, creating a magnetic field around the coil.
Why does a magnet work under water?
Interesting question. The answer is maybe - it depends on the construction of the electromagnet. the key is the electromagnet must be water proof, and the wiring used to create the magnet must be insulated from water - if this is not done, then current will flow through the water, which will decay the effectiveness of the electromagnet, along with robbing it of strength due to a decrease in current through the magnet.
Why is an electromagnet only suitable for removing iron or steel splinters?
An electromagnet, or any magnet, only attracts certain metals like iron. (Steel is a kind of iron.) If you want to remove, for example, aluminum splinters, you must use another process because aluminum is not attracted to a magnet.
What 3 things must be present to make an electromagnet?
To make an electromagnet, you need a power source (such as a battery), a conductive wire or coil, and a ferromagnetic core (such as iron). When an electric current flows through the wire, a magnetic field is created in the core, turning it into a magnet.
Why is electromagnet only a temporary magnet?
Well this is a simple one to explain. A permanent magnet is a magnet that can not be terminated or "switched off". whilst a temporary magnet can. So i ask you can an electromagnet be turned off. The answer is yes it can though it will have a residual magnetic field for a short period due to residual energy within. I hope this helps I must say that I'm surprised that a teacher did not tell you this during your school life unless you have not reached that part of your school life or you were absent or weren't listening. Nun the less I hope this helps you.
Why is an electromagnet only a temporary magnet?
Well this is a simple one to explain. A permanent magnet is a magnet that can not be terminated or "switched off". whilst a temporary magnet can. So i ask you can an electromagnet be turned off. The answer is yes it can though it will have a residual magnetic field for a short period due to residual energy within. I hope this helps I must say that I'm surprised that a teacher did not tell you this during your school life unless you have not reached that part of your school life or you were absent or weren't listening. Nun the less I hope this helps you.
Why are cryogens used in mri?
To keep the magnet cool. MRI machines need to generate a very strong magnetic field. They do this using superconducting electromagnet- basically a large coil of wire with a large current passing through it. The magnet must be kept very cold, almost at absolute zero, or it will not superconduct.
What must happen for an electromagnet to have a magnetic field?
An electromagnet must have a current flowing through its coil of wire in order to generate a magnetic field. When an electric current passes through the coil, it creates a magnetic field around the electromagnet.
Is the strength of an electromagnet measured in volts?
That's a tricky question. Well, technically it is not measured in volts. The strength of an electromagnet depends on the electrical current which flows through its wires, but not on what drives that current. The current is measured in the amount of charge per unit time that flows through the wires. But when it comes to measuring the magnet, you have to refer to the magnetic field. Without it, there wouldn't be any "magnet." So, logically, to measure the strength of the magnet you must first measure the strength of the magnetic field. It's strength is measured in Volts per meter(V/m). So to measure the strength of the electromagnet you must measure the strength of the magnetic field whose formula is found in the next to last sentence. Hope this helps.
Can copper form a permanent magnet?
Any metal can be the core of an electromagnet, but some work better than others, and still others result in different effects. A copper cored electromagnet produces a repulsing force, as opposed to the attractive force of an iron core electromagnet.
What must pass through a coil in order to make an electromagnet?
An electrical current will cause an electromagnet to energise.
What must a magnet do to generate an alternating current?
To generate an alternating current, a magnet must use kinetic energy. This means that the magnet must move at a certain speed and velocity in order to create a strong enough energy charge.
True or false an electromagnet must include a coil of wire?
A magnetic field is induced by pushing current though a wire; so you could consider a straight wire an electromagnet. Using more coils will strenghten the electromagnet, though, so a straight wire version will be very weak comparitively.
