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- 1. Multiple Choice
The process of transfer of charges from a charged object to the earth is called
earthing
lightning
electron movement
oscillation motion
- 2. Multiple Choice
How many types of charges are gained by rubbing objects?
2
1
3
4
- 3. Multiple Choice
When two bodies are rubbed against each other, they acquire
Equal charge
like charge
unlike charge
unequal charge
- 4. Multiple Choice
A device used to test whether an object is carrying charge or not is called ______.
Electrometer
Charge meter
Electroscope
Chargoscope
- 5. Multiple Choice
During a thunderstorm which action may not be done?
Switching on / off electric lights
Using a mobile phone
Using Telephone having cord
None of the above
- 6. Open Ended
The electrical charge generated by rubbing two objects is ………….
- 7. Multiple Choice
Electric current is to be passed from one body to another. For this purpose, the two bodies must be joined by
cotton thread
plastic string
copper wire
rubber band
- 8. Multiple Choice
Earthquakes can cause
Tsunami
Landslide
Lightning
- 9. Multiple Choice
The process of electric discharge cannot occur between clouds and the earth.
true
false
- 10. Open Ended
The aluminium strips in an electroscope as shown in fig. 15.1 are replaced by plastic strips and a charged body is brought in contact with the metal clip. What will happen?
- 11. Open Ended
If air and cloud were good conductors of electricity, do you think lightning could occur? Explain.
- 12. Multiple Choice
Which of the following is a negatively charged partice?
Electrons
Protons
Neutrons
All of the above
- 13. Multiple Choice
The place inside the earth's crust where the earthquake is generated is known as:
Epicenter
Focus
Fault
None of the above
- 14. Multiple Choice
Lightning occured when two charges they are:
Both positive
both negative
one negative and one positive
both neutral
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