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Question
Name two sources of electricity.
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Solution
- dry cell and battery
- generator and solar cell
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RELATED QUESTIONS
Name the +ve terminal of dry cell.
Secondary cell can be used only once.
Arrange in sequence
| A CELL | A DEVICE | ELECTRICAL ENERGY |
| IS CALLED | IN TO | CHEMICAL ENERGY |
| THAT CONVERTS |
A chemical solution that produces positive and negative ions is used as ______.
______ cell is used to operate devices such as mobile phones, computers, and emergency lights.
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 |
Name the substance that becomes ions in solutions and acquires the capacity to conduct electricity.
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?
