CBSE Class 8 Science - Some Natural Phenomena (2)
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Q1. What type of electric charge is acquired by a rubber balloon when rubbed with a
Q2. A positively charged object repels another charged object kept close to it. What is
the nature of charge on the other object?
Q3. A glass rod is rubbed with a silk cloth & a rubber balloon is rubbed with a woolen
a) Which two objects acquire negative charge?
b) Which two objects acquire positive charge?
Q4. Explain why, a glass rod can be charged by rubbing when held by hand but an
iron rod cannot be charged by rubbing, if held by hand?
Q5. Consider three charged bodies P, Q & R. If P & Q repel each other & P attracts R.
What is the nature of force between Q & R?
Q6. Name the device used to detect electric charge on a body. Draw its labeled
Q7. What will you observe when the metal cap of an electroscope is touched with a
glass rod which has been rubbed with silk cloth? Give reason for your answer.
Q8. What are the uses of an electroscope? (3 points)
Q9. Why do the leaves of a gold leaf electroscope diverge when a charged body is
brought in contact with its disc?
Q10. Do the leaves of an electroscope always diverge to the same extent when a
charged body is brought in contact with its disc?
Q11. What will you observe when the metal cap of an electroscope is touched with:
a) A positively charged object?
b) A negatively charged object?
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