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CBSE Class 10 Answered

Name the material used for making the connection wires. Give a reason for your answer. Why should a connection wire be thick?
Asked by Topperlearning User | 24 Jul, 2017, 09:20: AM
answered-by-expert Expert Answer

'Copper or Aluminium’ is used as a material for making connection wires because the resistivity of these materials is very small and thus wires made of these materials possess negligible resistance.

The connection wires are made thick so that their resistance can be considered as negligible.

Resistance of conductor pf length 'l' and area of cross section 'A' is begin mathsize 12px style straight R equals straight rho straight l over straight A end style

Therefore, greater the area of cross-section, lesser shall be the resistance. 

Answered by | 24 Jul, 2017, 11:20: AM

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