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Under space charge limited conditions , ...

Under space charge limited conditions , the plate current in a diode is 10 mA at place potential of 100 V, If the plate potential is changed to 400 V, what is the plate current ?

A

100 mA

B

120 mA

C

80 mA

D

60 mA

Text Solution

Verified by Experts

The correct Answer is:
C
Here according to child.s law :
`i propV^(3/2),i_1/i_2=((V_1)/V_2)^(3/2)" or "i_1=10xx((400)/100)^(3/2)`
or `i_1=10xx8=80` mA
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