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Give one important function of each of t...

Give one important function of each of these two devices. i) Switch ii) Fuse

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(1) Functions of Switch : It is an on off device which is used to either connect or disconnect an electric appliance in a circuit. It is connected in the live wire.
(2) Function of Fuse : It is used to limit the current in the electric circuit.
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ICSE-SAMPLE PAPER 2011-SECTION-II
  1. A man standing 25 m away from a wall produces a sound and receives the...

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

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  3. Give one important function of each of these two devices. i) Switch ii...

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  4. Draw a graph of Potential difference (V) versus Current (I) for an ohm...

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  5. How can you find the resistance of the resistor from this graph?

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  6. What is a non-ohmic resistor ?

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  7. An electric bulb is marked 100 W, 250 V. What information does this co...

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  8. How much current will the bulb draw, if connected to a 250 V supply?

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  9. Three resistors are connected to a 12 V battery as shown in the figure...

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  10. Three resistors are connected to a 12 V battery as shown in the figure...

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  11. Three resistors are connected to a 12 V battery as shown in the figure...

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  12. Explain why the weather becomes very cold after a hail storm.

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  13. What happens to the heat supplied to a substance when the heat supplie...

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  14. When 1 g of ice at 0^(@)C melts to form 1 g of water at 0^(@)C then, i...

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  15. Give one example where high specific heat capacity of water is used as...

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  16. Give one example where high specific heat capacity of water is used fo...

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  17. 250 g of water at 30^(@)C is present in a copper vessel of mass 50 g. ...

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  18. State two properties which a substance should possess when used as a t...

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  19. When an alpha particle gains two electrons it becomes neutral and beco...

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  20. Define radioactivity. Name various radioactive elements.

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