Magnets and Magnetic Forces

What is a magnet?

• a substance that exhibits a property called magnetism
• the force of attraction or repulsion of substances, especially those that contain iron, due to the arrangement of their electrons
• a region in which the magnetic fields of individual atoms are lined up
• a device that uses an electromagnet to convert electrical energy into mechanical energy

What is a magnetic domain?

• a region in which the magnetic fields of individual atoms are lined up
• the region around a magnet in which magnetic forces can act
• the force of attraction or repulsion of substances, especially those that contain iron, due to the arrangement of their electrons  
• the part of the atmosphere affected by Earth’s magnetic field

What is a magnetic field?

• the region around a magnet in which magnetic forces can act
• a region in which the magnetic fields of individual atoms are lined up
• a region in which the magnetic fields of individual atoms are lined up
• a substance that exhibits a property called magnetism  

What is a magnetic pole?

• the ends of a magnet
• a region in which the magnetic fields of individual atoms are lined up
• the region around a magnet in which magnetic forces can act
• a bar of iron wrapped with a coil of wire carrying an electric current

What is magnetism?

• the force of attraction or repulsion of substances, especially those that contain iron, due to the arrangement of their electrons  
• the study of technology devoted to developing and improving devices that use a flow of electrons
• the process by which electric current is produced by a changing magnetic field
• the process by which electric current is produced by a changing magnetic field

What is a magnetosphere?

• the part of the atmosphere affected by Earth’s magnetic field
• the relationship between electricity and magnetism
• a region in which the magnetic fields of individual atoms are lined up
• the region around a magnet in which magnetic forces can act

What is an electromagnet?

• a bar of iron wrapped with a coil of wire carrying an electric current
• the relationship between electricity and magnetism
• the process by which electric current is produced by a changing magnetic field
• the ends of a magnet

What is electromagnetism?

• the relationship between electricity and magnetism
• the process by which electric current is produced by a changing magnetic field
• a bar of iron wrapped with a coil of wire carrying an electric current
• a device that uses an electromagnet to convert electrical energy into mechanical energy

What is electromagnetic induction?

• the process by which electric current is produced by a changing magnetic field
• the study of technology devoted to developing and improving devices that use a flow of electrons
• a device that increases or decreases the voltage of alternating current
• the perfect conductivity shown by certain substances at extremely low temperatures

What is a generator?

• a machine that converts mechanical energy into electrical energy
• an electronic device that increases the strength of an electric signal
• a device that increases or decreases the voltage of alternating current
• a device that uses an electromagnet to convert electrical energy into mechanical energy