Table of Contents
How does an electromagnet work short answer?
Electromagnets. Electromagnets are a different from permanent magnets. Moving charges create magnetic fields, so when the coils of wire in an electromagnet have an electric current passing through them, the coils behave like a magnet. When the electricity stops flowing, the coils don’t act like a magnet anymore.
What is attracted to an electromagnet?
Iron, cobalt and nickel, as well as alloys composed of these ferromagnetic metals, are strongly attracted to magnets. Other ferromagnetic metals include gadolinium, neodymium and samarium.
How is an electromagnet used to make it work?
Electromagnets create a magnetic field through the application of electricity. This creates a magnetic field around the coiled wire, magnetizing the metal as if it were a permanent magnet. Electromagnets are useful because you can turn the magnet on and off by completing or interrupting the circuit, respectively.
Which of the following will be attracted to an 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.
What repels an electromagnet?
Electromagnets can either attract or repel each other, depending on which direction they are pointing. You can make electromagnets that repel with some small batteries, wire and iron nails. Wrap the wire around the other nail and connect it to the battery using the same sides as used on the first battery.
How can an electromagnet repel a permanent magnet?
It is possible to make an electromagnet repel a permanent magnet. To accomplish this the electromagnet’s current needs to induce a magnetic field “He” in the core which is stronger then the opposite field Hm that the magnet is inducing on that same core.
What is the purpose of an electromagnet?
Electromagnets are essential to the creation of electrical devices such as motors, generators, speakers, computers, and MRI machines. They are popularly recognized for their role in picking up and moving heavy magnetic objects like scrap iron.
How does an electromagnet make stronger?
When an electric current flows in a wire, it creates a magnetic field around the wire. You can make an electromagnet stronger by doing these things: wrapping the coil around a piece of iron (such as an iron nail) adding more turns to the coil.
How many paper clips can an electromagnet pick up?
How many paper clips can an electromagnet pick up with 20 coils?
| Number of turns of wire | Number of clips picked up – trial 1 | Number of clips picked up – trial 2 |
|---|---|---|
| 20 | 7 | 8 |
| 30 | 11 | 12 |
| 40 | 16 | 15 |
| 50 | 19 | 19 |