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If the ratio of the concentration of eloectrons that of holes in a semiconductor is 75 and the ratio of currents is 7/4, then what is the ratio of their drift velocities? 1) 4/7 2) 5/8 3) 4/5 4) 5/4

If the ratio of the concentration of eloectrons that of holes in a semiconductor is 75 and the ratio of currents is 7/4, then what is the ratio of their drift velocities?

1) 4/7 2) 5/8 3) 4/5 4) 5/4

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