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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
Write true or false for a given statement.
We use cell as the source of electricity to run an electric immersion rod.
Secondary cell can be used only once.
Name the device used to generate electricity.
Explain the construction and working of a dry cell.
Analogy.
Primary cells:: Toys
Secondary cells:: ______.
Which one of the following is using secondary using cells?
______ was developed is 1887 by Yei Sakizo of Japan
Write the differences between the primary cell and the secondary cell.
Paheli wanted to glow a torch bulb using a cell. She could not get connecting wires, instead, she got two strips of aluminium foil. Will she succeed? Explain, 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?
