Advertisements
Advertisements
प्रश्न
Magnets are used in _______ for generating electricity.
Advertisements
उत्तर
Magnets are used in dynamos for generating electricity.
APPEARS IN
संबंधित प्रश्न
Match the following
| Column A | Column B |
| (a). Human body | (1). electric bell |
| (b). Silk thread | (2). current |
| (c). Charge in motion | (3). conductor |
| (d). soft iron | (4). electromagnet |
| (e) . Electromagnet | (5). insulator |
Select the correct answer
An example of natural magnet is
Answer the following.
Can you bring two similar poles of two different magnetic close together easily? Why?
There is repulsion between the _____ poles of a magnet and attraction between its _____ poles.
With whom should I pair up?
| Group 'A' | Group 'B' |
| (a) Compass | 1. The highest magnetic force |
| (b) The door of a cupboard | 2. Like poles |
| (c) Repulsion | 3. A magnet |
| (d) Magnetic pole | 4. A magnetic needle |
Draw lines of force surrounding a bar magnet when it is placed in the magnetic meridian with its north pole pointing geographic, north.
Draw the magnetic flux pattern near a bar magnet placed with its axis in the magnetic meridian and the south pole pointing towards geographic north.
One of the following is an example for a permanent magnet.
What are the factors that determine the strength of the magnet?
Match the following:
| 1. | Electricity and magnetism | a. | Step-down transformer |
| 2. | Force on the conductor | b. | Hans Christian Oersted |
| 3. | Electric bell | c. | I LB |
| 4. | Ns <Np | d. | Electromagnet |
