Advertisements
Advertisements
प्रश्न
Briefly describe the structure of an atom.
Advertisements
उत्तर
STRUCTURE OF ATOM:
Atom: has an equal number of +ve charge (protons) and -ve charge electrons and hence atom has no charge.
Neutrons (having no charge) and protons are present in the nucleus. Electrons keep revolving around the nucleus in different shells.
APPEARS IN
संबंधित प्रश्न
Match the following
| Column A | Column B |
| Electric power | volt |
| kWh | joule |
| Electric current | volt × ampere |
| Electric energy | watt |
| watt | ampere |
| potential difference | electrical energy |
When an uncharged conductor is brought in contact with the disc of a gold leaf electroscope, its leaves ....................
Charge is shared in charging a conductor by the method of ...............
Match the following
| Column A | Column B |
| A. Two like charges | 1 negative charge |
| B. Two unlike charges |
2 repel |
| C. Silver is a | 3 insulator |
| D. Silk is an | 4 attract |
| E. Ebonite rod rubbed with fur acquires | 5 conductor |
Who discovered the way of producing electricity by friction?
A metal rod A is to be charged positively by using another charged rod B. What should be the kind of charge on the rod B if charging is to be done by conduction?
Figure below shows a metal rod AB placed on an insulating stand.
In figure (a) a negatively charged ebonite rod C is touched with the metal rod AB, while in figure (b), the negatively charged ebonite rod C is held near the rod AB. State the kind of charges at the ends A and B of the rod, in each case.
Can you charge an insulator by the method of conduction?
Describe a pith ball electroscope. how can you use it to test whether a body is charged or uncharged?
What are the characteristics of a static electric charge?
