Number of Tubes in Capacitor - 65 characters

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"tubes" in capacitor

Homework Statement



question is: what are tubes in capacitor?
or...
tubes connecting the conductors?

I'm supposed to find number of tubes...

During a "Equipotentials and Electric Field lines" Lab
where I create a Capacitor-like settings and measure the different potentials at different location. tap water inside a large, broad bowl is used as dielectric of capacitor...then electric field of the water is drawn. (AC source was used, Two conducting objects that are connected by alligator clip was placed on the bowl).

I need to apply this formula for my lab
C=E[N(t)/N(v)]

and it said "N(t) is the number of 'tubes' connecting the conductor.

What do they mean by tubes?

Homework Equations


C=E[N(t)/N(v)]

(E stands for EMF voltage
N(t) is number of delta V's between conductors
N(t) is number of "tubes" connecting the conductor.

The Attempt at a Solution

 
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bump: I just need to know what "tubes" are (tubes connecting conductor)