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When temperature of metal increases, doe...

When temperature of metal increases, does the resistance increases or decreases?

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MODERN PUBLICATION-ELECTRICITY-EXERCISE
  1. How is ammeter always connected in circuits?

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  2. If potential difference across resistor is increased, will the current...

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  3. When temperature of metal increases, does the resistance increases or ...

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  4. Which physical quantity has its unit kWh?

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  5. In a metal wire, electron moves from negative end to positive end and,...

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  6. For a continuous flow of current through a wire, the potential differe...

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  7. Electrochemical cell is a device which maintains a constant potential ...

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  8. symbol stands for variable resistor.

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  9. The current flows in a metal wire due to movement of electrons, wherea...

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  10. The resistance of copper is more than nichrome.

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  11. The best conductor of electricity is:

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  12. Constaitan is used as a standard resistor. Is the statement true or fa...

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  13. Electrical conductance of metals decreases with increase in temperatur...

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  14. The resistivity of a substance depends on its length and area of cross...

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  15. Ohm's law is a universal law. Is this statement true.

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  16. The following graph is for ohmic conductor. .Is this statement true.

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  17. Argon or nitrogen is filled up in place of air in bulb to increase the...

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  18. Show 1 watt=(1 ampere)xx(1 volt)

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

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

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