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प्रश्न
Observe the following circuits carefully. In which circuit will the bulb glow? Write Yes or No in the blank space provided along each of the circuit given in the figure.
|
(a) |
|
______ |
|
(b) |
|
______ |
|
(c) |
|
______ |
|
(d) |
|
______ |
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उत्तर
|
(a) |
|
No |
|
(b) |
|
Yes |
|
(c) |
|
No |
|
(d) |
|
Yes |
Explanation:
- Because piece of coal is a poor conductor of electricity.
- Because iron nail is a good conductor of electricity.
- Because eraser is a poor conductor of electricity.
- Because steel spoon is a good conductor of electricity.
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संबंधित प्रश्न
If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the ______ terminal of the battery.
The process of depositing a layer of any desired metal on another material by means of electricity is called ______.
Prepare a list of objects around you that are electroplated.
In an electrolyte the current is due to the flow of ______.
When electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates
Paheli wants to deposit silver on an iron spoon. She took silver nitrate (AgNO3) solution in a beaker and set up a simple circuit for electroplating. Which terminal of the battery should the spoon be connected to? What material should the other electrode be made of?
Why is tin electroplated on iron to make cans used for storing food?
Match the following
| 1. | Anode | a. | Conducting solution |
| 2. | Cathode | b. | Positive terminal |
| 3. | Ions | c. | Negative terminal |
| 4. | Electrolyte | d. | Positively or negatively charged |
Assertion: Parts of cars and bicycles are made iron with chromium coating.
Reason: Chromium does not corrode and resist scratches.
What are anodes and cathodes?
