Answer the following in not more than 40 words.
1. What is a circuit diagram? Draw the circuit diagram of a torch which works on three cells.
2. Identify the following symbols. Also mark the positive and negative terminals in the symbol for the cell.
3. How is the heat produced by an electric current related to resistance and the magnitude of the current?
4.Why is a long and thin tungsten filament used in a bulb?
5.Mention two problems associated with the heating effect of electric current.
6. What is an electromagnet? Mention two properties of an electromagnet.
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Answer:
1)A circuit diagram is a graphical representation of an electrical circuit. A pictorial circuit diagram uses simple images of components, while a schematic diagram shows the components and interconnections of the circuit using standardized symbolic representations.
Diagram in the picture attached..
2)..you have not given symbols...so can't answer it..
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