Light and Its Identity Quiz no 2 4th Q

1. The term “magnetism” originated from which location in Greece, known for its naturally occurring magnets?

• Athens

• Sparta

• Magnesia

• Crete

He formulated a set of four fundamental equations that describe the behavior of electric and magnetic fields.

• Isaac Newton

• Michael Faraday

• Nikola Tesla

• 1. James Clerk Maxwell

Which material is most commonly used to make permanent magnets?

• Copper

• Cobalt

• Gold

• Silver

What is the effect of cutting a bar magnet into two pieces?

• 1. Each piece will have only one pole.

• 1. Both pieces will lose their magnetism.

• 1. One piece will be a magnet, and the other will not.

• 1. Each piece will become a smaller bar magnet with both poles.

It refers to the reduction or complete removal of magnetic properties from a magnet.

• 1. Magnetic Induction

• 1. Demagnetization

• 1. Magnetization

• 1. Depolarization

Which of the following has the strongest magnetic field?

• 1. Alnico magnets

• 1. Ceramic magnets

• 1. Neodymium magnets

• 1. Samarium Cobalt magnets

The following methods are demagnetization except:

• 1. Bringing the magnet in contact with another magnet repeatedly.

• 1. Bringing the magnet in an electric current.

• 1. Dropping and hammering the magnet frequently.

• 1. Heating magnet to very high temperature.

What does the right-hand rule help determine?

• The direction of electric current. 

• 1. The magnitude of magnetic flux.

• 1. The potential difference in a circuit.

• 1. The direction of the magnetic field around a current-carrying wire.

What kind of force exists between the north pole of one magnet and another north pole of one magnet?

• Attractive

• Inductive

• Neutral

•  Repulsive

How does the magnitude of the current affect the strength of the magnetic field around a conductor?

• It is directly proportional.

• It is inversely proportional.

• It does not affect the magnetic field.

• It is proportional to the square of the current.