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प्रश्न
Select the correct alternative
In a torch, the source of electricity is
विकल्प
the bulb
the switch
the cell
the mains
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उत्तर
the cell
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संबंधित प्रश्न
Name two sources of electricity.
Explain the construction and working of a dry cell.
Analogy.
Primary cells:: Toys
Secondary cells:: ______.
Assertion (A): Primary cells can not be recharged, they can be used only once.
Reason (R): In vehicles, we use primary cells.
What is meant by a battery or collection of cells?
______ cell is used to operate devices such as mobile phones, computers, and emergency lights.
Name the portable form of an avalanche cell.
Write the differences between the primary cell and the secondary cell.
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.
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 | |
| ___________ | -------------- | |
| ___________ | -------------- | |
| ___________ | -------------- | |
| ___________ | -------------- |
