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Fill in the blanks: To increase the eff...

Fill in the blanks:
To increase the effective resistance in a circuit, the resistors are conneted in ………..

A

Series

B

Parallel

C

Both ways

D

None of these

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To decrease the effective resistance in a circuit, the resistances are connected in ……………… .

What is the effective resistance when two or more resistors are connected in series?

What is the effective resistance when two or more resistors are connected in parallel?

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Fill in the blanks MSH = ……….

Answer the following question: Obtain an expression for the effective resistance when a number of resistors are connected in series.

Answer the following question: Obtain an expression for the effective resistance when a number of resistors are connected in parallel.

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CHETANA PUBLICATION-CURRENT ELECTRICITY-EXERCISE
  1. Show motion of electrons in an circuit and explain precautions while u...

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  2. Complete the incomplete figure and give explanation:

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

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

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

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

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

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

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

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  10. Name the following .Unit of resistivity

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  11. A thick wire has a low resistance.

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  12. Wood and glass are good insulators.

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  13. Free electrons are required for conduction of electricity.

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

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

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

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

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

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

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  20. Derive the expression for the resistances connected inparallel.

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