MEDIUM
7th CBSE
IMPORTANT
Earn 100

State the main difference between a conductor and an insulator.

Important Questions on Electric Charges at Rest

MEDIUM
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 4

Name the device used for protecting tall buildings from lightning strikes.

MEDIUM
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 5
Give the meaning of the term 'earthing'
MEDIUM
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 6
List down two precautions that a person can take if he is caught outside in the open during a lightning strike.
HARD
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 1

A charged drinking plastic straw is brought near another suspended plastic straw, that is

(a) similarly charged

(b) uncharged.

Explain what we would observe in each case and why.

MEDIUM
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 2
Why do we say that 'charges are always produced in pairs'?
MEDIUM
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 3
Describe a simple experiment to show that the total charge on a pair of objects, that have been rubbed together, is zero.
EASY
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 4

Why does a charged object lose its charge when touched ?

MEDIUM
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 5
Can we say that a charged object attracts an uncharged object by first charging it through induction? Explain your answer.