EASY
8th CBSE
IMPORTANT
Earn 100

Explain how a piece of Styrofoam gets charged when it is rubbed with a piece of paper.

Important Questions on Electricity and Lightning

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?
EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q B
What are lightning conductors?
MEDIUM
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q C
Mention three ways by which a body can be charged. Describe an activity to illustrate how a body can be charged by induction. What would happen if you moved the rod away before separating the spheres?
HARD
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q C
With the help of a diagram, describe a gold-leaf electroscope.
MEDIUM
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q C
How would you use an electroscope to determine the nature of the charge (positive or negative) on a body?
MEDIUM
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 10 - Electricity and Lightning>Exercises>Q C
How does lightning occur?