In the ratio of the concentration of electrons that of holes in a semiconductor is 7/5 and the ratio of currents is 7/4 then what is the ratio of their drift velocities?
4/7
5/8
4/5
5/4
As we have learnt,
Electrical Conductivity (σ) -
- wherein
Option 1)
4/7
Option 2)
5/8
Option 3)
4/5
Option 4)
5/4
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