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https://edugenwi ugen/lti/main.uni ace your bookmarks here on the bookmarks bar. lemport bookmarksn.. Return to Blackboard Cutnell, Physics, 10 nread) nment Chapter 18, Problem 06 GO A plate carries a charge of-2 uc, while a rod carries a charge of 1.50 pc. How many electrons must be trastered from the data te eetodna ton a entitas an anon N- Number Units Click if you would like to Show Work for this question: Open how.Work Question Attempts: 0 of 3 used SAVE FOR LATER Rights Reserved. A Division of Policy

Explanation / Answer

The average charge is [(-2) + (1.5)]/2 = -0.25C, so this must be tthe final charge on each object when their charges are equal.

(-0.25) - (-2) = 1.75C must be added to the plate.
Its final change is then -2 + 1.75 = -0.25C

So 1.75C must be removed from the rod
Its final charge 1.5 - 1.75 = -0.25C
______________________________
Adding 1.75C to the plate is the same as removing -1.75C.

Since electrons are negative we need to transfer some (N) electrons from the plate to the rod (an amount with charge = -1.75C)

The charge on N electrons is -Ne = -N(1.6x10^-19) C

-1.75x10^-6 = -N(1.6x10^-19)
N = 1.75x10^-6 / (1.6x10^-19)
. . = 1.09x10^13 electrons

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