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CBSE Class 10 Answered

if one microampere current flows through a conductor for 10 seconds how many electrons will pass at the point of cross section
Asked by ruparus | 03 Nov, 2022, 10:02: PM
Expert Answer
 
rate of flow of charge is current . hence
 
Charge = current × time
 
Charge flow for 1 micro ampere in 10 seconds = 1 × 10-6  × 10 = 10-5 C
 
charge on one electron = 1.602 × 10-19 C
 
Number of electrons to get 1 micro ampere for 10 seconds =  10-5 / ( 1.602 × 10-19 )
 
Number of electrons = 6.242 × 1025
 
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