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Derive the expression for the resistance...

Derive the expression for the resistances connected inparallel.

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CHETANA PUBLICATION-ELECTRIC CURRENT THROUGH CONDUCTORS-EXERCISE
  1. Write a note on rheostat.

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  2. Derive the expression for resistances connected in series.

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  3. Derive the expression for the resistances connected inparallel.

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  4. Distinguish between resistance in series and resistance in parallel.

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  5. Calculate : total resistance and R1 = 3 Omega, R2= 6 Omega, R3 = 5O...

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  6. Calculate : total Solution: current in the following circuit. R1 = 3 O...

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  7. Three resistors 10 Omega, 20 Omega and 30 Omega are connected in serie...

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  8. Three resistors 10 Omega, 20 Omega and 31 Omega are connected in serie...

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  9. Two resistors 1k Omega and 2k Omega are connected in parallel combin...

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  10. Two resistors 1k Omega and 3k Omega are connected in parallel combin...

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  11. In given circuit diagram two resistors are connected to a 5V supply. ...

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  12. In given circuit diagram two resistors are connected to a 6V supply. ...

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  13. A battery after a long use has a emf 24V and an internal resistance 38...

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  14. A battery of emf 12 V and internal resistance 3 Omega is connected to ...

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  15. A battery of emf 12 V and internal resistance 3 Omega is connected to ...

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  16. State the factors on which the resistance of a given conductor at a pa...

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  17. Define specific resistance (resistivity). State its unit and dimension...

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  18. Write the different formulae of resistivity.

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  19. Define conductivity of a material. State its unit and dimension.

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  20. Write different formulae of conductivity.

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