Iron Filings Test around a Bar Magnet

Q.

Draw a diagram to show the magnetic field lines around a bar magnet.

Q.

The magnetic field lines produced by a bar magnet :

(a) originate from the south pole and end at its north pole

(b) originate from the north pole and end at its each pole

(c) originate from the north pole and end at its south pole

(d) originate from the south pole and end at its west pole

Q.

What are the two ways in which you can trace the magnetic field pattern of a bar magnet ?

Q.

Give reason for the following "Maximum number of iron filings always stick to the end of the magnet".

Q. The magnetic field produced by a bar magnet attracts the iron filings as each individual filing acts as a tiny bar magnet. True or False?

1. False
2. True

Q.

Why are strong magnets around the armature of a motor curved in shape?

Q. Iron filings are more concentrated towards the edges of a magnet and not towards the centre of the magnet although the field strength at the centre is more because ___?

1. the field at the centre is non-magnetic
2. the field at the centre is inside the magnet itself
3. the field at the edges only have attracting properties
4. None of the above

Q. Iron filings are more concentrated towards the edges of a magnet and not towards the centre of the magnet although the field strength at the centre is more because ___?

1. the field at the centre is non-magnetic
2. the field at the centre is inside the magnet itself
3. the field at the edges only have attracting properties
4. None of the above

Q. Choose the correct options regarding the magnetic field around a bar magnet.

1. Directed from north to south inside the magnet.

2. Dense at the poles of the magnet.

3. Dense at far away from the magnet.

4. Directed from south to north inside the magnet.

Q.

Statement 1: When iron fillings are spread around a magnet, they align themselves as shown.

Statement 2: Magnet apply force on each filling which makes them get oriented in the mentioned way.

1. Both statements are correct and statement 2 is the correct explanation for statement 1.

2. Both statements are correct but statement 2 is not the correct explanation for statement 1.

3. Statement 1 is correct but statement 2 is incorrect.

4. Both statements are incorrect.

Q.

A magnetic compass when placed in a magnetic field, aligns itself in the direction of magnetic field.

1. True
2. False

Q.

Statement 1: When iron fillings are spread around a magnet, they align themselves as shown.

Statement 2: Magnet apply force on each filling which makes them get oriented in the mentioned way.

1. Both statements are correct and statement 2 is the correct explanation for statement 1.

2. Both statements are correct but statement 2 is not the correct explanation for statement 1.

3. Statement 1 is correct but statement 2 is incorrect.

4. Both statements are incorrect.

Q.

Tej examines the magnetic field around a bar magnet using compass and iron particles and then draws magnetic field lines on a paper. Which of the following represents the correct magnetic field lines around the bar magnet ?

1. 
2. 
3. 
4. 

Q.

Statements given below are incorrect. Write the correct statements.

The strength of magnetic field around a bar magnet increase with the increase in distance from it.

Q. The magnetic field produced by a bar magnet attracts the iron filings as each individual filing acts as a tiny bar magnet. True or False?

1. True
2. False

Q.

Which of the following materials are magnetic?

1. Cobalt

2. Iron

3. Nickel

4. All of These

Q. Describe an activity to draw a magnetic field line outside a bar magnet from one pole to another.

Q. Four magnetic compasses are placed at different positions. Choose the compass that is showing the correct direction of the magnetic field.

Q.

A constant force acts on a system of two blocks of masses m₁ and m₂ (m₁>m₂), then-

1. Acceleration of COM is constant

2. Velocity of COM is constant

3. Velocity of m1 may be constant

4. Velocity of m2 may be constant.

Q. The diagram shows a bar magnet surrounded by four plotting compasses. Copy the diagram and mark it in the direction of the compass needle for cases B, C, and D.

Q. He seems to be confused. Can you answer the question?

1. Up
2. Down
3. Left
4. Right

Q. Which of the following is a natural magnet?a) horse shoe magnet b) bar magnet

c) lodestone d) electromagnet

Q. Magnetic field lines ___

1. Go from north pole to the south pole
2. Go from south pole to the north pole
3. Originates from south pole and away from the magnet
4. Originates from north pole and away from the magnet

Q. Magnetic field lines ___

1. go from north pole to the south pole.
2. go from south pole to the north pole.
3. originate from south pole and away from the magnet.
4. originate from north pole and away from the magnet.

Q. If a bar magnet is cut into 'n' pieces, how many poles will each magnet have?

1. 1
2. 2
3. 0
4. n

Q. Boojho dipped a bar magnet in a heap of iron filings and pulled it out. He found that iron filings got stuck to the magnet as shown in the figure.
Which regions of the magnet have more iron filings sticking to it?

Q. Take a cardboard and sprinkle some salt and iron filings on it. How will you separate these two?

1. Shake the cardboard
2. Blow them
3. Use a bar magnet
4. All of the above.

Q. The lines along which the iron filings align themselves around a bar magnet represent magnetic field lines.

1. True
2. False

Q. The direction of magnetic field in a bar magnet is

1. South pole to north pole
2. South pole to east pole
3. North pole to south pole
4. North pole to west pole

Q. difference between soft iron magnet and hard magnet