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Passage-I : Two large plates are locat...

Passage-I :
Two large plates are located in vacuum. One of them serves as a cathode, a source of electrons whose initial velocity is negligible. An electron flow directed toward the opposite plate produces a space charge causing the potential in the gap between the plates to vary as `V=ax^(4//3)`, where a is a positive constant, and x is the distance from the cathode.

The electric field between the plate as a function of x is

A

`E=ax^(1//3)`

B

`E=-ax^(2//3)`

C

`E=(-4a)/(3)x^(1//3)`

D

None

Text Solution

Verified by Experts

The correct Answer is:
C
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