MEDIUM
7th CBSE
IMPORTANT
Earn 100

Lightning is a natural electrical discharge phenomenon.

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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 5
We do not need any special device to protect tall buildings from lightning.
MEDIUM
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 plastic comb (comb B) is brought near another similarly charged, and suspended, plastic comb (comb A). Then comb A would-
MEDIUM
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 2
A student is provided with four objects:
A: A plastic comb
B: A copper rod
C: A rubber balloon
D: A woollen cloth
The object, that cannot be easily charged by rubbing, is the object labelled as-
MEDIUM
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 3
Two charged objects, are brought close to each other. The two objects would-
MEDIUM
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 4
During charging, by induction, it is-
MEDIUM
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 5
During charging (i) by conduction, and (ii) by induction, the charge on the charging object-
HARD
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 6
During lightning, we can have an electric discharge-
MEDIUM
7th CBSE
IMPORTANT
The Living World A book of Science and Technology>Chapter 11 - Electric Charges at Rest>Something To Know>Q 1
A glass rod is rubbed against a silk cloth. Which object/s gets/get charged in this process?