Describe the construction and working of an electric bell.
Important Questions on Electric Current and Its Effects
The picture given below shows a source of energy which can be used to produce electricity. Identify this source.
(Choose from the following: Wind energy/Solar energy)
The picture given below shows a source of energy which can be used to produce electricity. Name the type of power plant.
Can you think of an instance where the heating effect of electric current causes wastage of electricity?
When the fuse blew off, the electrician quickly fixed it with a copper wire because he did not have a proper fuse wire. Do you think he did the right thing?
Identify the following symbols used in a circuit diagram.
Complete the crossword puzzle given below.
Across
1. A _____ circuit is required for the flow of current.
2. A safety device used in electric circuits.
3. This is a temporary magnet.
5. Material that lets electric current to pass through it.
7. Unit of electric current.
8. Electric bell works on the _____ effect of current
Down
1. A source of electric current.
4. Heating element of electric iron is made up of this alloy.
6. Device used to measure electric current
