Tag: magnetic poles and magnetic compass

Questions Related to magnetic poles and magnetic compass

To find the S-pole of a compass is to find the end of the compass needle that.

magnetic compass magnetic poles and magnetic compass properties of magnet effect of electric current physics

  1. Is attracted to an iron

  2. Points to the north

  3. Repel by the S-pole of a magnet

  4. Attract by the S-pole of a magnet

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Correct Option: C
Explanation:

In a compass, needle points toward earth's magnetization south thus it its tip is north and its other end is south which is repelled by south pole of other magnet.

The answer to which of the following options will distinguish between a magnetic material and a non-magnetic material?

magnetic compass magnetic poles and magnetic compass properties of magnet effect of electric current physics

  1. Is it a metal of a non metal?

  2. Is it a conductor or an insulator?

  3. Can it be given an electric charge?

  4. Does it affect the direction in which a compass needle points?

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Correct Option: D
Explanation:

A magnetic compass points north because all magnets have two poles, a north pole and a south pole, and the north pole of one magnet is attracted to the south pole of another magnet. 
When this magnetic compass is brought near a magnetic substance, there is change in the direction of the needle based on the polarity of the magnetic substance closer to it. Whereas for a non magnetic substance it is not so.
Hence, the direction in which a compass needle points will distinguish between a magnetic material and a non-magnetic material.

State True or False :
A child staying in a coastal region tests the drinking water  with his tester. He finds that the compass needle deflects more in the case of sea water.

magnetic compass magnetic poles and magnetic compass properties of magnet effect of electric current physics

  1. True

  2. False

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Correct Option: A
Explanation:

Sea water contains more dissolved salts than the drinking water. 

Hence, it is more conducting than the drinking water. Because of this reason, the compass needle deflects more in sea water than in the drinking water.

Complete the following statements with an appropriate word / term to be filled in the blank space(s).

A compass needle is a ________ magnet :

magnetic compass magnetic poles and magnetic compass properties of magnet effect of electric current physics

  1. small

  2. big

  3. fieldless

  4. super

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Correct Option: A
Explanation:

A compass is an extremely simple device. A magnetic compass consists of a small, lightweight magnet balanced on a nearly frictionless pivot point. No matter where you stand on Earth, you can hold a compass in your hand and it will point toward the north and south pole.