Magnetism Flashcards
I can learn about magnets and how they work
What is magnetism?
Magnetism is a physical phenomenon produced by the motion of electric charge, which results in attractive and repulsive forces between objects.
True or False: All materials can be magnetized.
False.
What are the two poles of a magnet called?
North pole and South pole.
Fill in the blank: The area around a magnet where magnetic forces can be detected is called the _______.
magnetic field.
Which type of material is typically attracted to magnets?
Ferromagnetic materials.
What is the unit of magnetic field strength?
Tesla.
Multiple Choice: Which of the following is NOT a type of magnet? A) Permanent B) Temporary C) Electromagnetic D) Inertial
D) Inertial.
What is a permanent magnet?
A magnet that maintains its magnetic properties without the need for an external power source.
True or False: The Earth itself acts like a giant magnet.
True.
What happens when you cut a magnet in half?
You create two smaller magnets, each with a north and south pole.
Fill in the blank: The direction of a magnetic field can be represented using _______.
field lines.
What is the relationship between electricity and magnetism called?
Electromagnetism.
Multiple Choice: What device converts electrical energy into mechanical energy using magnetism? A) Generator B) Motor C) Transformer D) Capacitor
B) Motor.
What is an electromagnet?
A type of magnet in which the magnetic field is produced by an electric current.
True or False: Magnetic fields can pass through non-magnetic materials.
True.
What is magnetic flux?
The measure of the quantity of magnetism, taking into account the strength and the extent of a magnetic field.
Fill in the blank: The law that describes the relationship between electric current and magnetic fields is known as _______ Law.
Ampère’s Law.
What is the right-hand rule used for?
To determine the direction of the magnetic field around a current-carrying conductor.
Multiple Choice: What happens to the strength of a magnetic field as you move away from the magnet? A) It increases B) It decreases C) It stays the same D) It fluctuates
B) It decreases.
What is magnetic hysteresis?
The lag between the changes in magnetization of a material and the changes in the magnetic field applied to it.
True or False: A magnetic field can exist without an electric field.
True.
What is a magnetic domain?
A region within a magnetic material where the magnetic moments of atoms are aligned in the same direction.
Fill in the blank: A device used to measure the strength of a magnetic field is called a _______.
magnetometer.
What is the main cause of magnetism in materials?
The alignment of electron spins and their orbital movements.
Multiple Choice: Which material is commonly used to make permanent magnets? A) Copper B) Iron C) Aluminum D) Gold
B) Iron.
What is flux density?
The amount of magnetic flux through a unit area perpendicular to the direction of the magnetic field.
