NEETFLIX [ Quiz & Polls]
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Abhi aap 12th physics ka konsa chapter padh rhe hainAnonymous voting
- Chapter 1
- Chapter 2
- Chapter 3
- Chapter 4
- 2nd Book
😢 1🤣 1🗿 1
The constant k in Coulomb’s depends on Anonymous voting
- Nature of medium
- System of units
- Intensity of charge
- Both a and b.
👏 1
Which of the following statements is true about electric forces? Anonymous voting
- Electric forces are produced by electric charges.
- Like charges attract, unlike charges repel.
- Electric forces are weaker than gravitational forces.
- Positive and negative charges can combine to produce a third type of charge.
Coulomb’s law relates two charges and distance between them describing the electric force as being Anonymous voting
- proportional to the sum of the charges
- inversely proportional to the distance between charges
- proportional to the product of the charges and inversely proportional to the distance
- proportional to the product of the charges and inversely proportional to the square of distance
An object of mass 1 kg contains 4 x 1020 atoms. If one electron is removed from every atom of the solid, the charge gained by the solid in 1 g is Anonymous voting
- 2.8 C
- 6. 4 x 10-2 C
- 3.6 x 10-3 C
- 9.2 x 10-4 C
A coin is made up of aluminium and weights 0.75 g. It has a square shape and its diagonal measures 17 mm. It is electrically neutral and contains equal amounts of positive and negative charges. The magnitude of these charges is Atomic mass of Al – 26.98 gAnonymous voting
- 3.47 x 104 C
- 3.47 x 102 C
- 1.67 x 1020 C
- 1.67 x 1022 C
The number of electrons that must be removed from an electrically neutral silver dollar to give it a charge of +2.4 C is Anonymous voting
- 2.5 x 1019
- 1.5 x 1019
- 1.5 x 10-19
- 2.5 x 10-19
If 109 electrons move out of a body to another body every second, then the required to get a total charge of 1 C on the other body is Anonymous voting
- 250 years
- 100 years
- 198 years
- 150 years
A polyethene piece rubbed with wool is found to have a negative charge of 6 x 10-7 C. The num-ber of electrons transferred to polyethene from wool is Anonymous voting
- 3.75 x 1010
- 9.6 x 1010
- 9.6 x 1012
- 3.75 x 1012
A cup contains 250 g of water. Find the total positive charge present in the cup of water. Anonymous voting
- 1.34 x 1019 C
- 1.34 x 107 C
- 2.43 x 1019 C
- 2.34 x 107 C
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