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प्रश्न
Name two sources of electricity.
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उत्तर
- dry cell and battery
- generator and solar cell
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संबंधित प्रश्न
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.
Mention two advantages of a dry cell.
Which one of the following is using secondary using cells?
A chemical solution that produces positive and negative ions is used as ______.
A battery is a group of ______.
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 |
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?
Figure A and B, show a bulb connected to a cell in two different ways.
- What will be the direction of the current through the bulb in both the cases. (Q to P or P to Q)
- Will the bulb glow in both the cases?
- Does the brightness of the glowing bulb depend on the direction of current through it?
Fig. 12.10 A and B, show a bulb connected to a cell in two different ways.
Will the bulb glow in both the cases?
