A parallel-plate capacitor having plates 5.8cmapart is connected across the term
ID: 2285747 • Letter: A
Question
A parallel-plate capacitor having plates 5.8cmapart is connected across the terminals of a 12Vbattery.
Part A
Being as quantitative as you can, describe the location of the equipotential surface that is at a potential of 6.2Vrelative to the potential of the negative plate. Avoid the edges of the plates.
d= cm from the negative plate.
Part B
Do the same for the equipotential surface that is at 2.2V relative to the negative plate.
d= cm from the negative plate.
Part C
What is the potential gradient between the plates?
E= V/m
Explanation / Answer
a) it will changelinearly across the capacitor
V/Vtotal = x/d
6.2/12 = x/5.8
x = 5.8*6.2/12= 3.0 cm
b)
x = 5.8*2.2/12= 1.06 cm
c) E = V/d = 12/0.058= 206.9 V/m