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Q3. What is the force between two small charged spheres having charges of 4 x 10-7C and 6 × 10-7C placed 60 cm apart in air? (a) 3 x 10-3N (b) 4 x 10-3N (c) 6 x 10-3N (d) 9 x 10-3N - FirstInTest | FirstInTest