Two 2.9-cm-diameter electrodes with a 0.15-mm-thick sheet of Teflon between them are attached to a 9.0 V battery. Without disconnecting the battery, the Teflon is removed.
a) What are the electric field after the Teflon is removed?
To determine the electric field after the Teflon is removed, we need to consider the electric field inside the Teflon before it is removed.
The electric field between the electrodes with the Teflon in place can be approximated using the formula:
E = V / d,
where E is the electric field, V is the voltage across the electrodes, and d is the distance between the electrodes.
Given that the Teflon sheet is 0.15 mm thick, we can determine the electric field before the Teflon is removed as follows:
E_before = V / d_before,
where d_before is the distance between the electrodes with the Teflon in place.
Now, when the Teflon is removed, the distance between the electrodes changes. Since the thickness of the Teflon is 0.15 mm, the new distance between the electrodes without the Teflon will be:
d_after = d_before - 0.15 mm.
Substituting this new distance into the formula, we can determine the electric field after the Teflon is removed:
E_after = V / d_after.
Now, let's plug in the given values and calculate the electric field after the Teflon is removed.
http://www.physics.brocku.ca/Courses/1P22_DAgostino/samples/Ch21P.pdf
SP37 page 24