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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
The passage of an electric current through a solution causes ______ effects.
The process of depositing a layer of any desired metal on another material by means of electricity is called ______.
The process that you saw in the image is used for the purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from impure rod is sought to be transferred to the thin copper plate. Which electrode should be attached to the positive terminal of the battery and why?
The object to be electroplated is taken as ______ electrode.
Electroplating of ______ is done on objects like water taps and cycle bell to give them a shiny appearance.
Paheli set up an experiment using liquid A in the beaker as shown in the following figure. She observed that the bulb glows. Then she replaced the liquid A by another liquid B. This time the bulb did not glow. Boojho suggested replacing the bulb by an LED. They observed that the LED glows. Explain.
Explain the following:
Short circuit.
The most common industrial application of chemical effects of electric current is ______.
Liquids that conduct electricity are the solutions of ______.
What are anodes and cathodes?
