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5.4 Exercise 18

Avg difficulty 2.5

Point charges q1=50μCq_{1} = 50 \mu \text{C} and q2=−25μCq_{2} = −25 \mu \text{C} are placed 1.0 m apart. (a) What is the electric field at a point midway between them? (b) What is the force on a charge q3=20μCq_{3} = 20 \mu \text{C} situated there?

OpenStax University Physics Volume 2, 5.4 Electric Field, exercise 18

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Adapted from University Physics Volume 2 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 2. Imported at revision db44eb9.