What is the purpose of the electromagnetic field which surrounds a traveling-wave tube? Options: A . &nbspTo accelerate the electron B . &nbspTo velocity modulate the electron beam C . &nbspTo keep the electrons from spreading out D . &nbspTo slow down the signal on the helix

What is the purpose of the electromagnetic field which surrounds a traveling-wav

Question

What is the purpose of the electromagnetic field which surrounds a traveling-wave tube?

Options:

A . To accelerate the electron

B . To velocity modulate the electron beam

C . To keep the electrons from spreading out

D . To slow down the signal on the helix

Answer: Option C

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