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(II) Two point charges, Q₁ = -25 μC and Q2 = +45 μC,
are separated by a distance of 12 cm. The electric field at the
point P (see Fig. 21-58) is zero. How far from Q₁ is P?
21
-25 μC
FIGURE 21-58
Problem 36. P
X
12 cm
22
+45 μC

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