Advertisements
Advertisements
प्रश्न
A ______ can be detected with an electroscope.
पर्याय
always repulsion
always attraction
displacement of negative charge
displacement of positive charge
atom
molecule
steel
copper
plastic
inflated balloon
charged object
gold
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
______ is responsible for generation of electric charge in an object.
______ does not get electrically charged easily by rubbing.
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 |
Electrons move from ______ potential to ______ potential.
What are electric lines of force?
If an electron is added in excess to an atom then the atom is ______ charged.
The excess of electrons makes an object negative and ______ of electrons makes it positive.
What is the charge of one electron?
Calculate the charge passing through a lamp in 2 minutes if the current is 3A.
Define electric field.
