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  • A potential difference is applied to a copper wire of length and radius . If is doubled, the drift velocityOption: 1 Is doubled  

A potential difference is applied to a copper wire of length and radius . If is doubled, the drift velocity

Option: 1

Is doubled

 


Option: 2

Is halved

 


Option: 3

Remains same
 


Option: 4

Becomes zero


Answers (1)

best_answer

\mathrm{v_d=\frac{e E}{m} \tau=\frac{e \tau}{m} \frac{V}{l} \Rightarrow v_d \propto V.} If  \mathrm{V}  is doubled, \mathrm{v_d} also gets doubled 

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vinayak

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