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प्रश्न
Exercise.
Rubbing a comb on hair makes the comb get – 0.4C.
- Find which material has lost electron and which one gained it.
- Find how many electrons are transferred in this process.
उत्तर
-
The material is comb which gained electrons and the hair gained it.
-
Charge on 1 electron, e = 1.6 × 10– 19C
q = ne or n = `q/e`
n = `0.4/1.6` × 10– 19 = 0.25 × 1019 = 2.5 × 1018
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संबंधित प्रश्न
______ is responsible for generation of electric charge in an object.
There is ______ when opposite electric charge come near each other.
Rubbing of comb with hair
Electric field lines ______ from positive charge and ______ in negative charge.
Match the following.
| 1. | Electric charge | a. | ohm |
| 2. | Potential difference | b. | ampere |
| 3. | Electric field | c. | coulomb |
| 4. | Resistance | d. | newton per coulomb |
| 5. | Electric current | e. | volt |
What are electric lines of force?
As electrons are revolving in the ______ of an atom they can be easily removed from an atom and also added to it.
The excess of electrons makes an object negative and ______ of electrons makes it positive.
How many electrons accumulate to make 1C of electric charge?
What is the charge of one electron?
