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Questions and Answers
What is the effect observed when a charged balloon is brought near pieces of paper?
What is the effect observed when a charged balloon is brought near pieces of paper?
- The pieces of paper remain unaffected.
- The pieces of paper move away from the balloon.
- The pieces of paper repel the balloon.
- The pieces of paper are pulled towards the balloon. (correct)
What happens to the pieces of paper when they are brought near a charged body?
What happens to the pieces of paper when they are brought near a charged body?
- They shrink in size.
- They acquire an opposite charge and cling to the body. (correct)
- They repel the charged body.
- They become neutral.
What force is exerted by a charged body on another charged body?
What force is exerted by a charged body on another charged body?
- Electrostatic force (correct)
- Magnetic force
- Frictional force
- Gravitational force
What happens when a charged balloon is rubbed with a paper?
What happens when a charged balloon is rubbed with a paper?
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In the context discussed, what does 'charged body' refer to?
In the context discussed, what does 'charged body' refer to?
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Study Notes
Electrostatic Charge and Force
- When a balloon is inflated, tied, and then rubbed with a paper, it acquires an electrostatic charge on its surface, making it a charged body.
- When the charged balloon is brought near small pieces of paper on the floor, the pieces of paper are attracted to the balloon and rise to cling to it.
- This attraction occurs because the pieces of paper acquire an opposite charge when brought near the charged balloon.
- The force exerted by a charged body (the balloon) on another charged body (the pieces of paper) is known as electrostatic force.
- Electrostatic force is an example of a force that can act at a distance, even when the bodies are not in contact.
- The same phenomenon can be observed when using pepper and salt in place of pieces of paper, demonstrating the electrostatic force at work.
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