Charges +4 μC and +1 μC are 3 m apart. The field is zero at a point between them, at a distance from the +4 μC charge of:

  1. 2 m
  2. 1.5 m
  3. 1 m
  4. 2.4 m
Answer

A) 2 m

4x^2 = 1(3 - x)^2 Rightarrow x = 2 m. SLO P-11-E-08 · Application

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