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How is a fuse put in an electric circuit...

How is a fuse put in an electric circuit ? State the purpose of using a fuse in a circuit.

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ICSE-HOUSEHOLD CIRCUITS -EXERCISE -9(B)
  1. Complete the following sentences : Live wire is also called .... wi...

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  2. Why is the fuse wire fitted in a porcelain casing?

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  3. How is a fuse put in an electric circuit ? State the purpose of using ...

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  4. Describe with the aid of a diagram some form of a fuse which is used i...

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  5. Why should switches always be connected to the live wire?

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  6. How does the (i) thickness and (ii) length of a fuse wire depend on it...

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  7. Two fuse wires are rated 5 A and 20 A. Which of the two is (i) thicker...

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  8. Explain the meaning of the statement, 'The current rating of a fuse is...

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  9. 'A fuse is rated 8 A'. Can it be used with an electrical appliance of ...

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  10. Name two safety devices which are connected to the live wire of a hous...

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  11. An electric kettle is rated 3 kW, 250 V. Give reason whether this kett...

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  12. What is the purpose of a switch in a circuit ?

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  13. Why should switches always be connected to the live wire?

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  14. Give one precaution that should be taken while handling switches.

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  15. The switch should not be touched with wet hands.

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  16. Name the wire in a household electrical circuit to which the switch is...

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  17. It is dangerous to connect the switch in the neutral wire. Explain you...

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  18. Draw the diagram of a dual control switch when the appliance is switch...

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  19. Draw a circuit diagram using the dual control switches to light a stai...

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  20. What purpose is served by the terminals of a three way pin plug ? Draw...

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