18 Questions
What is the reason behind the sparks or crackling sounds we experience when taking off synthetic clothes, especially in dry weather?
The discharge of electric charges through our body, which were accumulated due to rubbing of insulating surfaces.
What does the term 'static' refer to in the context of electrostatics?
Anything that does not move or change with time.
What is the origin of the word 'electricity'?
The Greek word 'elektron', meaning amber.
What happens when like charges interact with each other?
Like charges repel each other.
What is the fundamental principle underlying the study of electrostatics?
The law of conservation of charge.
What is the purpose of an electroscope?
To detect and measure electric charges.
What happens to the charges acquired by objects when they are brought in contact with each other?
The charges are lost, and they neutralize or nullify each other's effect.
What convention was established by Benjamin Franklin to describe the types of electric charges?
The charge on a glass rod or cat's fur is called positive, and that on a plastic rod or silk is termed negative.
What is the purpose of a gold-leaf electroscope?
To detect and measure the amount of electric charge on a body.
Why do materials normally appear to be electrically neutral?
Because the charges they contain are exactly balanced.
What happens to the charges when an object is electrified?
The object acquires a net electric charge, and it is said to be electrified or charged.
What is the significance of the conservation of electric charge?
It means that the total electric charge of an isolated system remains constant, and charge cannot be created or destroyed.
What is the behavior of two glass rods rubbed with wool or silk cloth when they are brought close to each other?
They repel each other.
What is the property that differentiates the two kinds of electric charges?
Polarity of charge.
What happens when an electrified glass rod is brought in contact with the silk with which it was rubbed?
They no longer attract each other.
What is the behavior of like charges when they are brought close to each other?
They repel each other.
What is the number of kinds of electric charges that exist?
Two.
What happens to the bodies like glass or plastic rods, silk, fur, and pith balls when they are rubbed?
They acquire an electric charge.
Learn about the properties of static electricity and how it affects objects. Understand how charges are acquired and lost, and how they interact with each other. Discover the concept of positive and negative charges.
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