EASY
8th CBSE
IMPORTANT
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What would you expect in the following cases?
A plastic ruler is rubbed vigorously with a woollen cloth.

Important Questions on Electricity and Lightning

EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q A
What would you expect in the following cases?
A glass rod rubbed with a piece of silk is brought near a negatively charged paper cylinder.
MEDIUM
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q A
What would you expect in the following cases?
A positively charged rod is moved slowly towards an uncharged paper cylinder, which is suspended by a string, until the rod touches the cylinder.
EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q A
What would you expect in the following cases?
A negatively charged body is brought in contact with the disc of a positively charged electroscope.
EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q A
What would you expect in the following cases?
Someone touches the disc of a negatively charged electroscope.
EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q B
Explain how a piece of Styrofoam gets charged when it is rubbed with a piece of paper.
MEDIUM
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q B
When a charged rod is moved towards an uncharged paper cylinder suspended by a string, the cylinder gets attracted to the rod initially, and then moves away with a jerk. Explain why.
EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q B
Why do the leaves of a gold-leaf electroscope diverge when a charged body is brought in contact with its disc? Do they always diverge to the same extent?
MEDIUM
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q B
What happens to the charge on an electroscope when its disc is connected to that of an uncharged electroscope with the help of a conducting wire? What happens to the leaves of the two electroscopes?