Question

Find the time for 10 to the power 20 (10^20) of free electron the cross- section area .​

Answer 1

Answer:

Vd=neAI

=1029×1.6×10−19×10−620

=1.620×10−4

=1.62×10−3

=1.25×10−3m/s

Vd≈1×10−3m/s

$❀✿THA᭄NKS★$