1. Draw a simple electrical circuit and label the parts. Explain how we can connect a bulb in a
circuit and how it can show us if an electric current is flowing in the circuit or not.
Using a bulb, cell and key, draw diagrams and explain the flow of electric current in an'open
circuit' and in a'closed circuit'.
3. What is a dry cell? What is inside it? Why is it useful to us?
4. How does an electric torch work? Explaint with the help of a diagram.
5. One class of materials allow the flow of electric current and some do not. What are these
different classes of material called?
Answers
Answer:
3. Dry cells are the types of chemical cells or batteries which are used to store electricity. They are known as dry cells because the chemical present in them is not wet but they are in the form of a paste. They are used as batteries in toys, clocks, flash lights, calculators and many household appliances.
4.It consists of a bulb, electric cells, a switch, a reflector, and a cylindrical shape casing. Bulb: The bulb emits light when electric current flows through its filament. ... Switch: The switch is used to complete and break the circuit inside the torch. In simple words, it is used to turn the torch on and off.
5.Summary. Materials that allow electric current to pass through them are called conductors. Materials that do not allow electric current to pass through them are called insulators.
Explanation:
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Answer:
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