Point charges q1=50μC and q2=−25μC are placed 1.0 m apart. What is the force on a...
Point charges q1=50μC and q2=−25μC are placed 1.0 m apart. What is the force on a third charge q3=20μC. Where must q3 of the preceding problem be placed so that the net force on it is zero?
Homework Answers
let us consider that point is to the right of q2 at a distance d from it. at that point electric field due to q1 must be equal to electric field due to to q2
k q1 / ( 1 + d)^2 = k q2 / d^2
sqrt (q1 /q2) = 1/d + 1
d = 2.41 cm to the right of q2
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