In a klystron amplifier dc electron velocity is v0 and dc electron charge density is r0 the dc beam current is

1. 

In a klystron amplifier dc electron velocity is v0 and dc electron charge density is r0 the dc beam current is
[A]. r0v0
[B]. r0/v0
[C]. v0/r0
[D]. (v0/r0)2

Answer: Option A

Explanation:

30-297 = coulomb |sec|m2 = current density

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