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प्रश्न
An electric bulb is connected to a cell through a switch as shown in Fig. 12.7. When the switch is brought in the ‘ON’ position, the bulb does not glow. What could be the possible reason/s for it? Mention any two of them.
उत्तर
There could be the following reasons for it:
- Cell is a used one.
- Bulb is fused.
- Loose connections.
- Break in connecting wires.
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संबंधित प्रश्न
Fill in the blank
In a torch we use ______ as the source of electricity.
Mention two advantages of a dry cell.
Secondary cell can be used only once.
What are the types of cells? Give examples.
Assertion (A): Primary cells can not be recharged, they can be used only once.
Reason (R): In vehicles, we use primary cells.
______ cell is used to operate devices such as mobile phones, computers, and emergency lights.
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 |
A torch requires 3 cells. Show the arrangement of the cells, with a diagram, inside the torch so that the bulb glows.
Fig. 12.10 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)
