Electricity: Electrostatics & DC Circuits
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Free Maths Q & A Practice 1 of 5 free exam-style exercises in this topic
Two point charges, \(q_1 = +3.0\ \mu\text{C}\) and \(q_2 = -5.0\ \mu\text{C}\), are held \(0.20\text{ m}\) apart in a vacuum, as shown. The Coulomb constant is \(k = 8.99\times10^9\text{ N m}^2\text{C}^{-2}\).

+ − q1 = +3.0 μC q2 = −5.0 μC r = 0.20 m

What is the magnitude of the electrostatic force between the two charges?
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