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प्रश्न
Think of six activities which use electric current. Also name the devices used to perform the activity.
| Example: | Activity you perform | Device |
| Get light | Torch | |
| ___________ | -------------- | |
| ___________ | -------------- | |
| ___________ | -------------- | |
| ___________ | -------------- |
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उत्तर
| Example: | Activity you perform | Device |
| Get light | Torch | |
| Prepare an icecream | Refrigerator | |
| Watch movies | Television | |
| Listening songs | Radio | |
| Talk to someone far | Telephone | |
| Ironing clothes | Electric iron |
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संबंधित प्रश्न
Write true or false for a given statement.
We use cell as the source of electricity to run an electric immersion rod.
Fill in the blank
In a torch we use ______ as the source of electricity.
State two precautions that you must take when switching on an electric circuit.
Primary cells are usually produced in large sizes.
Analogy.
Primary cells:: Toys
Secondary cells:: ______.
______ was developed is 1887 by Yei Sakizo of Japan
Match the following
| 1. | Dry cells | a. | Reversible |
| 2. | Electrolyte | b. | Opens or closes the circuit |
| 3. | Switch | c. | Solution |
| 4. | Secondary cell | d. | Torches |
What is the source of electric current in a T.V. remote?
An electric bulb is connected to a cell through a switch as shown in the following figure. When the switch is brought in ‘ON’ position, the bulb does not glow. What could be the possible reason/s for it? Mention any two of them.
When the chemicals in the electric cell are used up, the electric cell stops producing electricity. The electric cell is then replaced with a new one. In case of rechargeable batteries (such as the type used in mobile phones, camera and inverters), they are used again and again. How?
