If steel is used for making the core of an electromagnet, the steel does not lose all its magnetism when the current is stopped and it becomes a permanent magnet. Therefore steel is not used as the core of electromagnet. because steel is not a magnetic substance. the electromagnet needs magnetic substances.

Originally Answered: Can a steel be used for making an electromagnet? Yes. Most inexpensive steel alloys will work quite well as the core material in an electromagnet. However, the steel core may retain significant magnetism after power is removed.

The core of an electromagnet must be of soft iron because soft iron loses all its magnetism when current in the coil is switched off. Therefore, steel cannot be used for making the core of electromagnets.

Iron, cobalt and steel are ferromagnetic materials which can be used to make magnet but ebonite cannot be used to make magnets. Was this answer helpful?

The strength of an electromagnet can be increased by increasing the number of loops of wire around the iron core and by increasing the current or voltage. You can make a temporary magnet by stroking a piece of iron or steel (such as a needle) along a permanent magnet.

We can say that, the strength of the electromagnet is directly proportional to the number of turns in the coil. If you double the number of turns, you double the strength of the electromagnet.

The magnetic field is caused by the current flowing in the wire. The bigger the current the stronger the magnetic field and hence the stronger the electromagnet.

They will have to measure the magnets strength by counting the number of paperclips your electromagnet can lift. They can also increase it by using more coils of wire, the number of dry cells also affects the strength of an electromagnet,more dry cells means more electrons flowing in the electromagnet.

Answer: Ferromagnetic metals are strongly attracted by a magnetic force. The common ferromagnetic metals include iron, nickel, cobalt, gadolinium, dysprosium and alloys such as steel that also contain specific ferromagnetic metals such as iron or nickel. Ferromagnetic metals are commonly used to make permanent magnets.

CONCLUSION. Electromagnets are very easy to build, and they can be controlled. They aren’t dangerous. They are more useful than regular magnets, and they work with electricity.

If the compass needle rest in any direction at a certain point it shows that the net magnetic force acting on the point is zero. Hence, the resultant magnetic field is zero. This point is also known as null or neutral point.

The electric motor works and how the power of electric magnetic forces help to provide energy. It shows how a magnet & coil wire can cause armature to spin.

It can be concluded that magnetic field at that point is zero. This is because the earth’s magnetic field at that point is neutralized by the magnetic field of some other magnetized material.