# Capacitor and close circuit

#### Filippo Verbania

Joined Oct 4, 2019
5
Hi,
How is it possible that a close circuit have capacitance? i printed a conductive filament with a shape of 8/9 rhombus connected in a raw and if i connect my multimeter to the end of the structure it gives me capacitance. What can be an explanation for that?

Last edited:

#### MrChips

Joined Oct 2, 2009
24,611
Welcome to AAC!

Every conductor has capacitance.
What is the value of the capacitance that you measured with the meter?

#### Filippo Verbania

Joined Oct 4, 2019
5

#### Filippo Verbania

Joined Oct 4, 2019
5
So the shape more or less is this one ---------<><><><><><><>. Why if i stretch this shape it changes the value?
Thank you

#### MrChips

Joined Oct 2, 2009
24,611
What is the new capacitance value?
Yes, it depends on the shape.
Any capacitance value from 0 to 20pF is not strange.

#### Filippo Verbania

Joined Oct 4, 2019
5
Yes it's stays in that range. So it possible that the capacitance change because the sides of the rhombus get closer?

Another question. Imagine two of these conductive structures, one on the top of the other separated by a non conductive material. Can I create a parallel plate capacitor in that way?

Thank you

#### Filippo Verbania

Joined Oct 4, 2019
5
And stretching the all structure the capacitance should change increasing right?

#### MrChips

Joined Oct 2, 2009
24,611
Yes, you can create a parallel plate capacitor in that manner.

The capacitance will depend on the shape, area, spacing, and insulating material used.