Now the positive and negative charge switch places. The
magnitude of the charges is still 7.2 µC where the blue one (now at
x = +3 m) is positive and the red one (now at x = -3 m) is
negative.
What are the x- and y-components of the electric field at (x, y)
= (0 m, +4 m)?
Now the positive and negative charge switch places. The magnitude of the charges is still 7.2 µC where the blue one (now
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