Magnetism

What happens to the magnetic field when the distance from the magnet increases?

• The strength of the magnetic field increases.

• The strength of the magnetic field remains the same.

• The strength of the magnetic field decreases.

• The magnetic field becomes unstable.

What are the two types of magnetic poles?

• North pole and south pole.

• East pole and west pole.

• Positive pole and negative pole.

• Magnetic pole and electric pole.

What is a permanent magnet?

• A material that produces a magnetic field without any external magnetic field being present.

• A type of magnet that only works when electricity is applied.

• A magnet that loses its magnetism over time.

• A material that can only attract iron objects.

What occurs when two like poles of magnets are brought together?

• They attract each other.

• They repel each other.

• They create a magnetic field.

• They become neutral.

What is magnetic flux?

• The measure of the quantity of magnetism, taking into account the strength and the extent of a magnetic field.

• A type of magnetic field that only exists in a vacuum.

• The total amount of electric charge in a magnetic field.

• The speed at which magnetic fields can change over time.

What is a key feature of electromagnets?

• They can be turned on and off.

• They are always magnetic.

• They require no power to operate.

• They can only attract metal objects.

What is the right-hand rule in magnetism?

• A method to determine the direction of the magnetic field around a current-carrying conductor.

• A technique to measure the strength of a magnetic field.

• A rule to calculate the speed of a moving charge in a magnetic field.

• A principle that states like poles repel and unlike poles attract.

What is the difference between a permanent magnet and an electromagnet?

• A permanent magnet can be turned on and off, while an electromagnet cannot.

• A permanent magnet maintains its magnetic field, while an electromagnet's field can be controlled by electricity.

• A permanent magnet is made of iron, while an electromagnet is made of copper.

• A permanent magnet is always stronger than an electromagnet.

What happens when a north pole and a south pole of two magnets face each other?

• They repel each other.

• They attract each other.

• They create a magnetic field.

• They have no effect on each other.

What is magnetism?

• A force of attraction or repulsion that occurs between two magnetic objects.

• A type of energy that can be harnessed for power.

• A phenomenon that only occurs in metals.

• A method of communication using magnetic fields.