- #1
megabassdude
- 1
- 0
Homework Statement
Suppose two metal plates are separated by 1.00 cm. These plates are wide:
at least 0.5 m square. We hook wires from a battery to each plate, so that there is a
potential of 500 volts between them.
Homework Equations
(A) Find the electric field between the plates, in
the middle where the field is quite uniform.
(B) Suppose we introduce a small object
which has +2.0 nC (nanocoulombs) of charge on it, placing it between the plates, near
the middle where you just found the electric field. Determine the electric force on this
object.
The Attempt at a Solution
(A)
I'm guessing I use the formula VAB = Ed.
Step 1
1.00 cm converted to meters = 0.01
Step 2
VAB = Ed.
500=(E)(0.01).
E = 5.0 x 104 V/m.
Does the width of the plate have any influence though?
(B)
I can't figure out how to do part (B)
I'm thinking I use the formula F = qE.
Step 1
+2.0 nanoCoulomb's converted to Coulombs = +2.0 x 10-9 C
Step 2
F = qE.
F =(2.0 x 10-9 C)(5.0 x 104 V/m)
F = 1.0 x 10-4 N
Again does width of the plate have any influence?
Last edited: