Iron Filings Test around a Bar Magnet

Q.

A U-shaped permanent magnet attracts iron less strongly than a bar magnet.

1. True
2. False

Q.

When is the attractive property of a magnet maximum?

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 incorrect.

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

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

Q.

A circular loop placed in a plane perpendicular to the plane of paper carries a current when the key is ON. The magnetic field lines point from B to A. The N-pole of the resultant magnet is on the face close to:

1. $A$

2. $B$

3. A if the current is small, and B if the current is large

4. B if the current is small, and A if the current is large

Q.

pins suspended from the same magnet to their
maximum limit in two different cases(pin a are more than pin b). State with a reason whether the set of
pins A or the set of pins B are made out of soft iron. Also define the magnetic
process which enables us to suspend the pins one below the other.

Q.

What do you understand by the term magnetic field?

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

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

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 but statement 2 is not the correct explanation for statement 1.

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

3. Both statements are incorrect.

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

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. 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. Magnetic field lines ___

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

Q.

Which of the following materials are magnetic?

1. Nickel

2. Cobalt

3. All of These

4. Iron

Q.

When iron filings are spread on a piece of paper and a bar magnet is kept below the paper, the filings ___.

1. arrange themselves in a random fashion

2. accumulate near the centre of the magnet

3. arrange themselves around the magnet in a particular pattern

4. gets pushed away from the paper