The amount of positive and negative charges in a cup of water (\(250\) g) are respectively:

1. \(1.6 \times10^9\) C, \(1.4 \times10^9\) C
2. \(1.4 \times10^9\) C, \(1.6 \times10^9\) C
3. \(1.34 \times10^7\) C, \(1.34 \times10^7\) C
4. \(1.6 \times10^8\) C, \(1.6 \times10^7\) C
Subtopic:  Electric Charge |
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If \(10^9\) electrons move out of a body to another body every second, how much time approximately is required to get a total charge of \(1\)on the other body?
1. \(200\) years
2. \(100\) years
3. \(150\) years
4. \(250\) years

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If a body is charged by rubbing it, its weight:

1. remains precisely constant.
2. increases slightly.
3. decreases slightly.
4. may increase slightly or may decrease slightly.

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Given below are four statements: 

a. The total charge of the universe is constant.
b. The total positive charge of the universe is constant.
c. The total negative charge of the universe is constant.
d. The total number of charged particles in the universe is constant.


Choose the correct option:

1. (a) only 
2. (b), (c) 
3. (c), (d) 
4. (a), (d) 
Subtopic:  Electric Charge |
 66%
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