This is because repulsion is observed only when two bodies have like charges and this means that the bodies must be charged. … On the other hand, attraction cannot be considered as a true test of electrification as attraction can also take place between a charged particle and a neutral particle.
What is sure test of electrification attraction or repulsion Why?
Yes. Repulsion is observed only when two bodies have like charges that means the bodies must be charged. Therefore, repulsion is sure test for electrification than attraction.
What is sure test of electrification?
Repulsion is the sure test of electrification. Note: If two bodies are electrified (i.e., charged they can either attract or repel). If they are: (a) attracted: this is not only possible by electrification but can also be due to the attraction of an uncharged body with charged body.
Is attraction a true test for electrification?
Hence, repulsion is a true test of electrification. On the other hand, attraction cannot be considered as a true test of electrification as attraction can also take place between a charged particle and a neutral particle. Hence, only repulsion is a true test of electrification.
What is the sure test of magnetism?
Repulsion is the sure test for magnetism because it occurs only when two like poles of a magnet exist while the attraction phenomenon can occur between two unlike poles of a magnet and also between a magnet and a magnetic material means if there are two magnets they will attract each other and suppose if one material …
What is electrification explain?
Electrification is the process of powering by electricity and, in many contexts, the introduction of such power by changing over from an earlier power source. The broad meaning of the term, such as in the history of technology, economic history, and economic development, usually applies to a region or national economy.
What is not true for electric charge?
Answer: D is not true charge of one electron is not one coloumb. Coulomb is very big unit of charge.
Can a charged body attract an uncharged body?
Yes, a charged body attracts an uncharged body as the oppositely charged bodies attract each other.
Which is the most accurate test of charge on a body?
An electroscope is used to detect that a body is charged or not. It works on the principle that like charges repel while unlike charges attract each other. When the metal strips repel each other proves that the body is charged because repulsion is the sure test to detect that a body is charged or not.
Why attraction is not a sure test for magnetism?
Whereas the north pole of one magnet attracts the south pole of the other magnet. Other than magnetic substances, a magnet also attracts metals like iron. Therefore, with the attraction of two materials we cannot determine whether both of them act as magnets or show magnetism.
Why must a crane have an electromagnet?
Cranes with electromagnetic lift are also known as electromagnetic cranes. Such cranes are used widely in lifting and moving scrap metals. … Electromagnets have special simplicity and many advantages to other lifting tools. They are faster and easier to work with.
Which is the only sure proof of testing the polarity of magnet?
Repulsion is the surest test of polarity and magnetism.