Poles of Magnet

Q. A bar magnet is cut into two halves and the two magnets formed are left alone. Which of the following would happen?

1. Both the magnets will have a single pole.
2. The two magnets will attract each other.
3. Nothing will happen
4. The magnets will not exert any force on them.

Q.

Explain how will you convert soft iron nail into an electromagnet?

Q. What are the similarities and differences between gravitational, electromagnetic and magnetic force?

Q.

Which of the following poles attract each other:

1. North-South

2. North-North

3. South-South

Q.

You are given a bar magnet whose poles are not marked. How will you identify the poles?

Q.

Which of the following statement is correct?

1. Maximum iron filings stick to the middle of a bar magnet when it is brought near to them.

2. Steel is not a magnetic material.

3. Rubber is a magnetic material.

4. Bar magnets always point towards North-South direction.

Q.

The earth behaves as a magnet with a magnetic field pointing approximately from the geographic

1. North to south

2. South to north

3. East to west

4. West to east

Q.

The strength of the south pole of a magnet is equal to the strength of its north pole.

1. less than

2. greater than

Q.

Similar poles ___ each other.

Q. How will you identify the poles of the horseshoe magnet if you are given one along with a magnetic compass? $\left[2\text{marks}\right]$

Q. Q) HOW MANY NEUTRAL POINTS ARE OBTAINED WHEN A BAR MAGNET IS PLACED IN THE MAGNETIC MERIDIAN WITH ITS NORTH POLE POINTING TOWARDS: a. north pole of the earth b. south pole of the earth

Q.

A freely suspended magnet always aligns in

1. E-W direction

2. Any of these direction

3. N-S direction

4. N-W direction

Q.

Whether the length of a bar magnet is more than, equal to or less than its effective length? Give reason to your answer.

Q.

State true or false.
A magnet's power to attract metallic objects is equally distributed in its body.

1. True
2. False

Q.

Use the following information to answer the next question.

Two bar magnets are stored safely in pairs (as shown in the given figure). Magnetic poles labelled I and II arepoles, and the object labelled III is aobject.

The information in which alternative completes the given statement?

1. 

2. 

3. 

4. 

Q.

The artificial magnet used to detect the direction in the laboratory is:

1. U-shaped magnet

2. horse shoe type magnet

3. electromagnet

4. magnetic compass

Q. Ifis the magnetic latitude at a place, then what is the relation between the angle of dip andmagnetic latitude?

Q. Poles of a magnet can never be separated.

1. True
2. False

Q.

.A device used by the sailors to find the direction in which their ship is moving is called________.

Q.

An insulated copper wire is wound around a steel nail and current is passed for some time. The nail will change to a:

1. permanent magnet

2. temporary magnet

3. will not get magnetised

4. none of the above

Q. When a magnet is kept on a table and a compass is taken close to it, it points in a certain direction at every point near the magnet. When the points are joined, we obtain certain lines. Choose the correct statement(s):

1. The closer they are, stronger the magnetic field.
2. They are imaginary lines which have a particular direction.

1. Only 1
2. Both 1 and 2
3. Only 2
4. Neither 1 nor 2

Q.

Which of the following statement is correct regarding magnets?

1. Rubber is a magnetic material.

2. Most of the iron filings stick to the middle of a bar magnet when iron filings are sprayed on the bar magnet.

3. Bar magnets always point towards North-South direction when freely suspended.

4. Steel is not a magnetic material.

Q.

The magnet will align itself along the poles of a nearby strongest magnet.

1. False

2. True

Q.

Whenever there is a force on magnetic pole, there exists:-

1. Electric field

2. Magnetic field

3. Current

4. Voltage

Q. At which point, the magnetic field strength produced by the bar magnet is the weakest?

1. A
2. B
3. C
4. D

Q.

There is a bar in my hand. When I suspend it using a thread, it aligns itself such that one end faces the geographic north direction. It also attracts items made of similar materials. What can this bar be considered analogically similar to?

1. A bar magnet

2. A battery

3. An electric bulb

4. A water tank

Q.

Like poles of magnets ___ each other.

Q.

A magnet always has two poles.

1. 4

2. 1

Q.

How can we tell that a magnet always points towards north direction?

Q.

Which of the following statements is/are TRUE?

1. A cylindrical magnet has only one pole.

2. Artificial magnets were discovered in Greece.

3. A compass can be used to find East-West direction at any place.

4. Similar poles of a magnet repel each other.