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प्रश्न
State two precautions that you must take when switching on an electric circuit.
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उत्तर
Precautions to be taken before the circuit is switched on, the following precautions must be taken:
- See that all the components of the circuit are properly connected.
- See that the connection wire is tightly connected to each appliance or component.
- Do not touch the switch or any component with wet hands.
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संबंधित प्रश्न
Name two sources of electricity.
Mention two advantages of a dry cell.
The device which converts chemical energy into electrical energy is
Secondary cell can be used only once.
Assertion (A): Primary cells can not be recharged, they can be used only once.
Reason (R): In vehicles, we use primary cells.
A battery is a group of ______.
Name the portable form of an avalanche cell.
Name the substance that becomes ions in solutions and acquires the capacity to conduct electricity.
Write the differences between the primary cell and the secondary cell.
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 | |
| ___________ | -------------- | |
| ___________ | -------------- | |
| ___________ | -------------- | |
| ___________ | -------------- |
