magnetism and electromagnetism (p2) Flashcards
How will like poles (north & north or south & south) behave when they interact?
They will repel and push away from each other
How will opposite poles (north & south or south & north) behave when they interact?
They will attract and pull towards each other
Is the magnetic force a contact or a non-contact force?
Non-contact
On a magnet, where is the magnetic field strongest?
The magnetic field is strongest at the poles of a magnetic
What is a permanent magnet?
A magnet that produces its own magnetic field
What is an induced magnet?
A material that becomes magnetic when it is placed in a magnetic field
What is the difference between a permanent and an induced magnet?
A permanent magnet always has a magnetic field, but an induced magnet only becomes magnetic when it is placed into a magnetic field
What is a magnetic field?
The region of space where a magnetic force will act on a magnet or a magnetic material
What are the four types of magnetic material?
Iron, nickel, cobalt and steel
Is the force between a magnet and a magnetic material attractive or repulsive?
Attractive
What shape is the magnetic field around a bar magnet?
Many loops going from the North pole to the South pole
In which direction should magnetic field lines point?
Magnetic field lines point towards the south pole of the magnet
What is a magnetic compass?
A small bar magnet mounted on a pin so that it can spin around. It will point in the direction of a nearby magnetic field
What does the strength of a magnetic field depend on?
The strength of the magnet AND the distance from the magnet
Is the magnetic field around the Earth permanent or induced?
permanent