Two charges, +4 μC and -6 μC, are separated by 3 meters. What is the electric force between them? (k = 9×10⁹ N·m²/C²)
Q1. Two charges, +4 μC and -6 μC, are separated by 3 meters. What is the electric force between them? (k = 9×10⁹ N·m²/C²)
Answer: 36×10⁻³ N (attraction)
Explanation: Coulomb's Law F=k|q1q2|/r². Option C fails because it uses k=12×10⁹ instead of 9×10⁹.