Understanding Capacitance: Calculating Electric Fields with an Air Gap Capacitor

[cwrx14]

Homework Statement

How strong a field between plates 0.80 uf air gap capacitator if 2 mm apart has charge of 72 ucol?

Homework Equations

My teacher has not given a formula, any examples, etc. I really would like to learn this and its not in the textbook. Please help, thanks.

The Attempt at a Solution

I won't lie because I have no clue.

 

[cwrx14]

I also have a problem that says what is the magnitude and direction of the electrical field at a point midway between -8 ucoul and 7 ucol charge 8 cm apart? assume no other charges nearby.

 

[Redbelly98]

Homework Statement

How strong a field between plates 0.80 uf air gap capacitator if 2 mm apart has charge of 72 ucol?

Homework Equations

My teacher has not given a formula, any examples, etc. I really would like to learn this and its not in the textbook. Please help, thanks.

The Attempt at a Solution

I won't lie because I have no clue.

Try the equation that relates Q, C, and V.