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Draw the electrical symbols for a clos...

Draw the electrical symbols for
a closed switch.

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LAKHMIR SINGH & MANJIT KAUR-Electric Current And its Effects-EXERCISE
  1. Draw the electrical symbols for a bulb (or lamp) .

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  2. Draw the electrical symbols for an open switch.

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  3. Draw the electrical symbols for a closed switch.

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  4. Draw a circuit diagram which includes the following : A cell, a bulb...

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  5. Draw a circuit diagram which includes the following : A battery of t...

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  6. Draw the circuit diagram to represent the circuit shown below.

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  7. Name five appliances (or devices) in which electric cells are used.

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  8. State applications of heating effect of electric current.

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  9. When does an electric short-circuit occur?

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  10. Explain the importance of using in a household electric circuit (i) fu...

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  11. How can overloading in the electric circuit be avoided ?

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  12. Explain why, any metal wire or metal strip cannot be used in place of ...

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  13. What type of elastic fuse is used in electrical appliances like car st...

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  14. What type of elastic fuse is used in electrical appliances like car st...

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  15. What might happen if a fuse is not inserted in household electric wiri...

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  16. What might happen if a fuse is not inserted in household electric wiri...

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  17. Do you think an electromagnet can be used for separating plastic bags ...

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  18. State the uses of electromagnetic radiations.

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  19. Why do we use iron for making an electromagnet and not steel ?

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  20. What is an electromagnet ? Explain in your own words, how to make an e...

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