Advertisements
Advertisements
Question
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) |
|
______ |
Advertisements
Solution
|
(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.
APPEARS IN
RELATED QUESTIONS
Name three liquids, which when tested in the manner shown in Figure, may cause the magnetic needle to deflect.
Electroplating is an example for ______.
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 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?
In the circuit given as figure, Boojho observed that copper is deposited on the electrode connected to the negative terminal of the battery. Paheli tried to repeat the same experiment. But she could find only one copper plate. Therefore, she took a carbon rod as negative electrode. Will copper still be deposited on the carbon rod? Explain your answer.
The terminal which is connected to a positive terminal of a battery is called ______.
Liquids that conduct electricity are the solutions of ______.
______ is used in the extraction and purification of metals.
