Magnets

Q.

What is magnetism?

Q.

____________ is used to make powerful magnets.

1. Steel

2. Cobalt

3. Alnico

4. Bronze

Q.

Will the magnets attract each other in space where there is no gravity?

Q. If a bar magnet is broken into two pieces as shown in the figure below, what can you incur or observe from this experiment?​

1. Each part is found to have a single pole (south pole) in a magnet.
2. Can’t be determined.
3. Each part is found to have a single pole (north pole) in a magnet.
4. Each part is found to have its own north and south pole in a magnet.

Q. Which of the following is not a characteristic of a magnet?

1. Attract magnetic materials
2. 
   Unlike poles attract and like poles repel each other
   
3. Monopoles exist in a magnet
4. 
   When suspended freely, the magnet always rests in the north-south direction.
   

Q.

A magnet's strength to attract metallic objects is equally distributed throughout its length.

1. True

2. False

Q.

Why is a cow magnet used to prevent Hardware disease in cattle?

1. Cow magnet is an antibiotic

2. Can't tell

3. Cow magnet is a magnet which collects all the magnetic materials

4. Cow magnet kills all the magnetic material inside

Q. A magnet is broken into 3 pieces, the total number of poles are

1. 2
2. 4
3. 3
4. 6

Q.

A NATURAL MAGNET IS AN OXIDE OF IRON, NAME IS

Q.

The rock that attracts metals is termed as

1. A – Striker, B- Contact Screw, C – Electromagnet, D - Gong

2. A – Gong, B- Contact Screw, C – Electromagnet, D - Striker

3. A – Striker, B- Electromagnet, C –Contact Screw, D - Gong

4. A – Striker, B- Gong, C – Contact Screw, D – Electromagnet

Q.

Magnetite is a/an _____.

1. Natural magnet

2. Electromagnet

3. Artificial magnet

4. Not a magnet

Q.

Which of the following metals are magnetic in nature?

1. Aluminium, copper

2. Cobalt, nickel, iron, steel

3. Copper, lead, brass, zinc

4. Iron, aluminium, zinc, lead

Q.

In which direction does a suspended bar magnet come to rest? give reason.

Q.

A freely suspended magnet aligns in the north-south direction.

Q.

a natural magnet is an oxide of iron name is

Q. A copper rod is suspended a non-homogeneous magnetic field region. The rod when in equilibrium will align itself:

1. in the region where magnetic field is strongest
2. in the region where magnetic field is weakest and parallel to direction of magnetic field there
3. in the region where magnetic field is weakest and perpendicular to the direction of magnetic field there
4. in the direction in which it was originally suspended