How do I do the very last part of this problem? A point particle that has a char
ID: 2284156 • Letter: H
Question
How do I do the very last part of this problem?
A point particle that has a charge of +11.5 nC is at the origin. Assuming the potential to be zero at r = ?, calculate the radii of the five surfaces that have potentials equal to 18.5 V, 36.5 V, 54.5 V, 72.5 V, and 90.5 V.
(d) Estimate the electric field strength between the 36.5-V and 54.5-V equipotential surfaces by dividing the difference between the two potentials by the difference between the two radii.
Eest ? 19.3 V/m
Compare this estimate to the exact value at the location midway between these two surfaces.
(E estimate - E exact)/(E exact) x 100% =_________?
V (V) 18.5 36.5 54.5 72.5 90.5 r (m) 5.59 2.83 1.897 1.43 1.14Explanation / Answer
Estimate the electric field strength between the 36.5-V and 54.5-V =
E = -V/d
= 54.5 -36.5/1.897-2.83
=19.299 V/m
xact value at the location midway between these two surfaces.=
the potential is zero at the a location midway between the charges
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