Point Charges of 4

question 114

Multiple Choice

Point charges of 4.0 × 10^-8 C and -2.0 × 10^-8 C are placed 12 cm apart. A third point charge of 3.0 × 10^-8 C halfway between the first two-point charges experiences a force of magnitude

• A) 4.5 × 10^-3 N.
• B) 2.0 × 10^-3 N.
• C) 1.5 × 10^-3 N.
• D) zero.
• E) 5.0 × 10^-3 N.

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