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Do all objects get charged by rubbing?
Answer
Only insulators (materials which do not conduct electricity) can be charged by rubbing, that is by providing friction.
The earth’s plate responsible for causing earthquakes is
(a) the crust of the earth
(b) the mantle of the earth
(c) the inner core of the earth
(d) the outer core of the earth
Answer
(a) the crust of the earth
Earthquakes are caused by tectonic movements in the Earth's crust.
As per convention, what is the charge on a glass rod when it is rubbed with silk cloth?
- Positive
- Negative
- Either 'a' or 'b'
- No charge
Answer
- Positive
