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How many times (roughly) is the resistiv...

How many times (roughly) is the resistivity of an insulator greater than a metal ?

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`10^25` times
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PRADEEP-ELECTRICITY-(Additional)Very Short Answer
  1. Why are copper wires used as connected wires ?

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  2. A wire of resistivity rho is stretched to double its length. What is i...

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  3. How many times (roughly) is the resistivity of an insulator greater th...

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  4. What is the resistance of a connecting wire ?

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  5. What is the resistance of an ammeter ?

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  6. What is the resistance of a voltmeter ?

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  7. Which has more resistance : 100 W bulb or 60 W bulb ?

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  8. Which material is the best conductor of electricity at room temperatur...

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  9. What is the resistance of an air gap ?

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  10. Why are conductors different from insulators ?

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  11. Is drift speed of electrons in a conductor carrying current the same a...

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  12. What sets the electrons into motion in an electric circuit ?

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  13. Why are filaments of incandescent lamps made of thin tungsten wire ?

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  14. Which are the metals that are generally used : (i) in electric circu...

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  15. Graphs between electric current and potential difference across two co...

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  16. Why is resistance more in series combination of resistors ?

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  17. Why is resistance less in parallel combination of resistors ?

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  18. How will you join three resistances, each of 2 Omega so that the effec...

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  19. On what factors does the resistivity of a material depend ?

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  20. What happens to the current in a circuit if its resistance is doubled ...

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