# Quiz_C - the two contributions (from Q and from Q) must...

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Physics 241 – Sample Quiz C – Jan. 8, 2008 Two point charges are separated by distance d as shown. Where can you put a third charge of 1 C so that there is no net electric force acting on it? (Take Q > 0.) a) to the right of charge -Q b) to the left of charge Q c) between the two charges d) some other place e) nowhere -Q In order for the net force on the third (test) charge to be zero,
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Unformatted text preview: the two contributions (from Q and from Q) must cancel out completely. Both contributions are in the same direction between the two charges, and though they are in opposite directions to the left of Q or right of Q, in each case the contribution from the closer charge is greater in magnitude....
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## This note was uploaded on 07/29/2008 for the course PHYS 241 taught by Professor Wei during the Spring '08 term at Purdue University-West Lafayette.

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