- #1

PhysKid45

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## Homework Statement

Two 2.4-cm-diameter disks face each other, 1.9 mm apart. They are charged to ± 12 nC .

What is the electric field strength at the midpoint between the centers of the disks?

## Homework Equations

## The Attempt at a Solution

Q=12*10^-9

A= Pi * r^2 = pi*(.012)^2

Q/A= (12*10^-9)/(pi*(.012)^2)

E=(Q/A)/epsilon naught (8.85*10^-12)

E= 3*10^6

I am not sure where I go wrong, but I have one attempt left and keep getting the same answer

[Edit] answer: 2.7*10^6 but I would appreciate if someone could explain why

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