Q9 of 20 Page 77

Unscramble the following words:

(i) TBTAYER


(ii) SFEU


(iii) HTRCO


(iv) HICWTS

(i) Battery, it is a combination of two or more cells.

(ii) Fuse, it is safety device in electric circuit.


(iii) Torch, it is a portable lamp powered using battery.


(iv) Switch, an electrical component used to break the circuit.


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Name the device used these days in place of electric fuses in electrical circuits.

 8

Fill in the blanks:

(i) Our body is a ________________ of electricity.


(ii) An electric cell produces electricity from the __________ ___________ in it.


(iii) In an electric circuit a fuse is a _________ _______ to prevent possible fire.


(iv) A combination of two or more cells is called a _________.

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Paheli does not have a night lamp in her room. She covered the bulb of her room with a towel in the night to get dim light. Has she taken the right step? Give one reason to justify your answer.

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Why are compact fluorescent lamps (CFLs) preferred over electric bulbs?