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प्रश्न
What are electric lines of force?
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उत्तर
The direction of the electric field is the direction of the force that would act on a small positive charge. Therefore the lines representing the electric field are called ‘electric lines of force’.
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संबंधित प्रश्न
There is ______ between like charges.
______ is responsible for generation of electric charge in an object.
______ does not get electrically charged easily by rubbing.
There is ______ when opposite electric charge come near each other.
Rubbing of comb with hair
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 |
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.
What are positive and negative ions?
The excess of electrons makes an object negative and ______ of electrons makes it positive.
Define electric field.
