1. Two point charges, initially 20 cm apart, are moved to a distance of 100 cm apart. What is the factor in the change of the resulting electric force between them?    A. 25 B. 5 C. 1/15 D. 1/25   2. Two point charges having charges of -2.0 μC and 4.0 μC are separated by 1.5 cm. What is the electric force between them?    A. -3.2 x 10^2 N B. -3.2 x 10^-2 N C. -3.2 x 10^10 N D. -3.2 x 10^-10 N

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