What is the sure test of?
Question: Why repulsion is the sure test for magnetism ? Sol. This is because , Repulsion takes place only between two likes poles of a magnet whereas attraction takes place between two unlike poles of a magnet and also between a magnet and a magnetic material .
Why repulsion is a sure test than attraction?
Repulsion is said to be the sure test to find whether an object is charged or not because attraction can occur between an uncharged body and a charged body due to induction of charges from the charged body to the uncharged body.
Why repulsion is a sure test of magnetism but attraction is not?
Repulsion can only take place between two like poles of a magnet. By attraction, one can not say if a substance is magnetic or not, but if two objects repel each other, one can be sure that those two objects are magnets. Hence, Repulsion is the sure test for magnetism.
What is the real test for recognizing a magnet?
Repulsion is the surest test of the magnets, because a magnetic substance also has attractive property. Repulsion is the surest test because any substance made of iron,nickel, cobalt will also have attraction but won’t have repulsion.
What are natural magnets?
Magnetite, also known as lodestone, is a naturally occurring rock that is a magnet. This natural magnet was first discovered in a region known as magnesia and was named after the area in which it was discovered.
How a magnet can be demagnetized?
Answer: Magnet can de demagnetised by heating past the Curie point, applying a strong magnetic field, applying alternating current, or hammering the metal.
Is attraction a true test of electrification?
Attraction takes place between two oppositely charged particles. … 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.
Can two bodies of same charge can attract each other?
Can two similarly charged bodies attract each other? Solution: Solution: Yes, when the charge on one body (q1) is much greater than that on the other (q2) and they are close enough to each other so that force of attraction between q1 and induced charge on the other exceeds the force of repulsion between q1andq2.