NEET Class neet Answered
please answer this
Asked by Prashant DIGHE | 14 Jan, 2020, 10:09: PM
Expert Answer
Area of sample = 4 × 10-3 × 25 × 10-5 = 100 × 10-8 m2
current passing through area = 4.8 × 10-3 A
current density = ( 4.8 × 10-3 )/ ( 100 × 10-8 ) = 4800 A/m2
current density = n × e × v
where n is electron density, e is charge on electron and v is drifting speed of electron
hence speed of electron = 4800 / ( 1022 × 1.602 × 10-19 ) ≈ 3 m/s
time taken to travel full length = distance/speed = 25 × 10-5 / 3 = 8.33 × 10-5 s ≈ 83 μs
Answered by Thiyagarajan K | 15 Jan, 2020, 07:20: AM
Application Videos
-
Growth of Current in L-R Circuit
In this video, the growth of current in RL circuit is explained. It include...
NEET neet - Physics
Asked by praveenpriya000079 | 18 Apr, 2024, 07:24: AM
ANSWERED BY EXPERTNEET neet - Physics
Asked by gouranshi84 | 17 Apr, 2024, 05:23: PM
ANSWERED BY EXPERTNEET neet - Physics
Asked by sojusvi | 17 Apr, 2024, 01:12: PM
ANSWERED BY EXPERT
