MEDIUM
7th CBSE
IMPORTANT
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A charged plastic comb (comb B) is brought near another similarly charged, and suspended, plastic comb (comb A). Then comb A would-
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Important Questions on Electric Charges at Rest
MEDIUM
7th CBSE
IMPORTANT
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
Two charged objects, are brought close to each other. The two objects would-
MEDIUM
7th CBSE
IMPORTANT
During charging, by induction, it is-
MEDIUM
7th CBSE
IMPORTANT
During charging (i) by conduction, and (ii) by induction, the charge on the charging object-
HARD
7th CBSE
IMPORTANT
During lightning, we can have an electric discharge-
MEDIUM
7th CBSE
IMPORTANT
A glass rod is rubbed against a silk cloth. Which object/s gets/get charged in this process?
MEDIUM
7th CBSE
IMPORTANT
Name two objects
(a) that can be charged by rubbing
(b) that do not get charged on rubbing.
MEDIUM
7th CBSE
IMPORTANT
State the main difference between a conductor and an insulator.
