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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
Fill in the blank
In a torch we use ______ as the source of electricity.
Arrange in sequence
| A CELL | A DEVICE | ELECTRICAL ENERGY |
| IS CALLED | IN TO | CHEMICAL ENERGY |
| THAT CONVERTS |
An electric cell has ______ terminals.
Analogy.
Primary cells:: Toys
Secondary cells:: ______.
Which one of the following is using secondary using cells?
What is meant by a battery or collection of cells?
______ was developed is 1887 by Yei Sakizo of Japan
______ cell is used to operate devices such as mobile phones, computers, and emergency lights.
Choose the incorrect statement.
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?
