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प्रश्न
A ______ can be detected with an electroscope.
विकल्प
always repulsion
always attraction
displacement of negative charge
displacement of positive charge
atom
molecule
steel
copper
plastic
inflated balloon
charged object
gold
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उत्तर
A charged object can be detected with an electroscope.
Explanation:
This instrument is used to detect electrical charge (positive or negative). When an object is electrically charged, its reaction in the electroscope indicates whether the object is charged or not. The electroscope has a filament or blades, which can move closer or farther from each other when charged, thus indicating the charge.
संबंधित प्रश्न
There is ______ between like charges.
______ is responsible for generation of electric charge in an object.
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 |
On what factors does the electrostatic force between two charges depend?
What are positive and negative ions?
As electrons are revolving in the ______ of an atom they can be easily removed from an atom and also added to it.
If an electron is added in excess to an atom then the atom is ______ charged.
Calculate the charge passing through a lamp in 2 minutes if the current is 3A.
Define electric field.
