Question

Which statement about an electromagnet is true?

Answer 1

An electromagnet does not function without a source of current.

An electromagnet functions because of the electric current used to generate the magnetic field

Further Explanation  

Magnet  

• A magnet is an object that possess magnetic field and thus attracts certain materials when they are brought near it. Materials attracted by a magnet are known as magnetic materials while those that are not attracted by a magnet are known as no-magnetic materials.
• A magnet contains two poles that is the North Pole and the South Pole. Magnetic field lines run from the south towards the North Pole.

Electromagnet

• An electromagnet is a type of magnet that is made from electric current. This is done by passing electric current through a solenoid which surrounds a magnetic material such as soft iron.
• An electromagnet depends on the electric current passed through the material used to make it, such that when the electric current is withdrawn then the magnetism is lost.
• Additionally, an increase in the amount of electric current increases the strength of the electromagnet and vice versa.
• Electromagnets are made from coils of electrical wires carrying electric current. A magnetic material such as soft iron is then placed inside the coil, resulting to the creation of magnetic fields with north and south poles.  
• Electromagnets have a wide variety of uses such as in speakers, motors, generator and other many kinds of electric devices.  

Keywords: Electromagnets, magnets, electric current

Learn about:

1. Magnets: brainly.com/question/12181004
2. Electromagnet: brainly.com/question/4421491
3. Uses of electromagnets: brainly.com/question/4421491

Level: High school

Subject: Physics

Topic: Electromagnetism  

Answer 2

The correct answer is 1.

An electromagnet is type of magnet in which a magnetic field is produced by an electric current.

However, the magnetic field disappears when the current is turned off. Therefore, it does not function without a source of current.