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प्रश्न
Choose the incorrect statement.
विकल्प
A switch is the source of electric current in a circuit.
A switch help to complete or break the circuit.
A switch helps us to use electricity as per our requirement.
When the switch is open there is an air gap between its terminals.
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उत्तर
A switch is the source of electric current in a circuit.
Explanation:
An electric cell is the source of electric current in a circuit.
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संबंधित प्रश्न
What is dry cell?
Name the device used to generate electricity.
Explain the construction and working of a dry cell.
An electric cell has ______ terminals.
______ Cells used in automobiles like cars and buses are large and very heavy.
Define electric cell. What is the direction of the electric current in a cell?
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?
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?
Fig. 12.10 A and B, show a bulb connected to a cell in two different ways.
Does the brightness of the glowing bulb depend on the direction of current through it?
