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Determine the current that will flow when a potential difference of 33 V is applied between two ends of an appliance having a resistance of `110Omega`. If the same current is to flow through an appliance having a resistance of `500Omega`, how much potential difference should be applied across its two ends?

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CHETANA PUBLICATION-CURRENT ELECTRICITY-EXERCISE
  1. Complete the incomplete figure and give explanation:

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  2. Fill in the blanks: To increase the effective resistance in a circuit...

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  3. Resistivity is the specific property of a………. .

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  4. Following is true for identical bulbs connected in parallel.

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  5. The……..wire is either yellow or green in colour.

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  6. Find the odd one out: Voltmeter, Ammeter, Galvanometer, Thermometer

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  7. Write pairs. Electric resistance :Ohm ::..........volt.

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  8. Which is the unit used to measure large voltages?

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  9. Name the following .Unit of resistivity

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  10. A thick wire has a low resistance.

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  11. Wood and glass are good insulators.

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  12. Free electrons are required for conduction of electricity.

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  13. Acurrent of 0.4Aflowsthrough a conductor for 5minutes. How much charge...

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  14. Find the amount of work done if 3 C of charge is moved through a poten...

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  15. The length of a conducting wire is 50 cm and its radius is 0.5 mm. If ...

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  16. Determine the current that will flow when a potential difference of 33...

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  17. The resistance of a 1m long nichrome wire is 6 Omega. If we reduce the...

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  18. When two resistors are connected in seriesthe total resistance is 80Om...

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  19. Derive the expression for the resistances connected inparallel.

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  20. Draw an electrical circuit and explain working of a fuse.

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