GENERAL INSTRUCTIONS (Please read the following instructions very carefully)
1. Question marks are mentioned with each Question.
2. Please write neat and clean hand-writing on Answer Sheet. Use Margin on right side and left side of Answer Sheet.
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4. Do not click the button Submit Test before completing the paper on Answer Sheet.
5. This is a ONE TIME attempt test. Once started, it cannot be reversed or attempted again.
6. Take photo of all the Sheets and make single pdf file.
1
In charging by ___________________, charging is done without touching the charged body to the object that has to be charged.
Conduction
Induction
Friction
None of these.
2
When a negatively charged body is connected to earth, the ________________________ from the body start flowing to the earth, till the body becomes neutral and hence its potential becomes zero.
Electrons
Protons
Neutrons
3
The lower end of the lightning conductor is connected to a _______________, which is buried deep under the ground.
Metal plate
Earth
Insulator
All of these
4
When a positively charged body is connected to the Earth, the ________________________ start flowing from the earth till the positive charge of the body becomes zero, and hence potential of the body becomes zero.
None of these
5
The process of transfer of charges from a charged object to the earth is called ______________________.
Earthing
Grounding.
Both (a) and (b) are correct.
6
When we bring a charged electrode close to a metal object, then there occurs a distribution of charge in the metal object. This process is known as _________________
None of the above
7
What will happen if we remove the charged glass rod away from the metal object during the process of charging by induction ?
The distribution of charge in metal object remain same
The metal body get uncharged again
No change in the charge of metal object
8
Where we should take shelter during lightning ?
Indoor
Under a tree
Large open field
Open water
9
What are the safety measure during lightening ?
Do not take shelter under a tree.
Try to take shelter indoors.
Get out of and away from open water.
All of these.
10
The silk cloth with which the glass rod is rubbed acquires ____________ charge.
Positive
Negative
Both positive and negative
Remains neutral
11
When we remove polyester or woollen cloth in dark, we can see spark and hear a cracking sound. These are due to:
Current electricity
Static electricity
Reflection of light
Refraction of light
12
When a body is charged by induction, then the body ____________________________-
Becomes neutral
Does not lose any charge
Loses whole of the charge on it
Loses part of the charge on it
13
A lightning conductor :
Conducts electricity
Stops lightning
Saves building from lightning
All the above
14
Which of the following are correct :
(a) Earth can be regarded as a large reservoir of oppositely charged particle, electrons and protons.
(b) Earth on a whole is electrically neutral.
(c) The process of transfer of charges from a charged object to the earth is called earthing or grounding.
Only (a) and (b) are correct.
Only (b) and (c) are correct.
Only (a) and (c) are correct.
15
(a) When a negatively charged body is connected to earth, the electrons from the body start flowing to the earth, till the body becomes neutral and hence its potential becomes zero.
(b) When a positively charged body is connected to the earth, the protons start flowing from the earth till the positive charge of the body becomes zero, and hence potential of the body becomes zero.
(c) When a positively charged body is connected to the earth, the electrons start flowing from the earth till the positive charge of the body becomes zero, and hence potential of the body becomes zero.