हिंदी

Which of the Following Are Conductors and Which Are Insulators? Sulphur, Silver, Copper, Cotton, Aluminium, Air, Nichrome, Graphite, Paper, Porcelain, Mercury, Mica, Bakelite, Polythene, Manganin.

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प्रश्न

Which of the following are conductors and which are insulators?

Sulphur, Silver, Copper, Cotton, Aluminium, Air, Nichrome, Graphite, Paper, porcelain, Mercury, Mica, Bakelite, Polythene, Manganin.

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उत्तर

Conductors: silver, copper, aluminium, nichrome, graphite, manganin, mercury
Insulators: cotton, air, paper, porcelain, mica, bakelite, polythene, sulphur

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अध्याय 4: Electricity - Exercise 1

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लखमीर सिंग Physics [English] Class 10
अध्याय 4 Electricity
Exercise 1 | Q 12

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संबंधित प्रश्न

On what factors does the resistance of a conductor depend?


What is (a) the highest, (b) the lowest total resistance that can be secured by combinations of four coils of resistance 4 Ω, 8 Ω, 12 Ω, 24 Ω?


 What is meant by the "resistance of a conductor" ? Write the relation between resistance, potential difference and current.


What happens to the resistance as the conductor is made thicker?


Which has more resistance: 

 a long piece of nichrome wire or a short one?


Which has more resistance:    

 a thick piece of nichrome wire or a thin piece?


How does the resistance of a conductor depend on: 

 temperature of the conductor?


What would be the effect on the resistance of a metal wire of:

increasing its length?


What would be the effect on the resistance of a metal wire of:  

 increasing its diameter? 

 


What would be the effect on the resistance of a metal wire of:  

increasing its temperature?

 


Resistance of a metal wire of length 5 m is 100 Ω . If the area of cross - section of the wire is `3 × 10^-7  "m"^2` , Calculate the resistivity of the metal . 


Materials which allow larger currents to flow through them are called:


The effective resistance between A and B is:


Assertion: Conductors allow the current to flow through themselves.

Reason: They have free charge carriers.


How will you infer with the help of an experiment that the same current flows through every part of the circuit containing three resistances in series connected to a battery?


Plastic insulation surrounds a wire having diameter d and length l as shown above. A decrease in the resistance of the wire would be produced by an increase in the ______.


How will the resistance of a wire be affected if its

  1. length is doubled, and
  2. radius is also doubled ?

Give justification for your answer.


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