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From rated value of power and potential ...

From rated value of power and potential difference the resistance of the appliance can be found by the formula `R=(V_(rated)^2)/(P_(rated))`. This resistance does not change if the same appliance is used across different potential difference. But the power of appliance will change. Is this statement true.

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MODERN PUBLICATION-ELECTRICITY-EXERCISE
  1. Show 1 watt=(1 ampere)xx(1 volt)

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  2. What is meant by the BOTU (or Board of Trade unit) of electric energy?

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  3. From rated value of power and potential difference the resistance of t...

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  4. Fill ups Electric potential at a point is the …………….in moving a ………….....

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  5. Fill ups …………xxV=W

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  6. Fill ups 1Axx1s=……………..

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  7. Fill ups Q= Ixx……………

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  8. Fill ups Electric current through an area is the amount of ………….flowin...

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  9. Fill ups The current flowing through a conductor is directly proportio...

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  10. Fill ups V=Ixx………….

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  11. Fill ups The S.I unit of resistance is……………and is denoted by…………… .

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  12. Fill ups The resistance of a conductor depends on……………..and…………….

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  13. Fill ups The S.I unit of resistivity is…………….. .

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  14. Fill ups Electric iron, electric toaster, electric oven, electric kett...

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  15. Fill ups If current passes through a resistor is doubled, the rate of ...

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  16. The following circuit diagram shows the experimental set up for the st...

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  17. In a voltmeter there are 20 divisin between the 0 mark and 0.5 V mark....

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  18. For the circuits shown in figure I and II the voltmeter reading would ...

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  19. Which of the circuit components in the following circuit diagram are c...

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  20. The current flowing through a conductor and the potential difference a...

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