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प्रश्न
State two precautions that you must take when switching on an electric circuit.
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 the +ve terminal of dry cell.
What is dry cell?
Name the scientist who invented the electric cell.
Name the device used to generate electricity.
An electric cell has ______ terminals.
Primary cells are usually produced in large sizes.
What is meant by a battery or collection of cells?
______ cell is used to operate devices such as mobile phones, computers, and emergency lights.
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?
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?
