Physics

Physics

Problem

A +4 μC+4\,\mu\text{C} point charge is located at x=0x=0 and a +9 μC+9\,\mu\text{C} point charge is at x=0.30 mx=0.30\,\text{m} on the xx-axis. At what position along the line joining the charges is the net electric field equal to zero? a) x=0.15 mx = 0.15\,\text{m} from the +4 μC+4\,\mu\text{C} charge b) x=0.09 mx = 0.09\,\text{m} from the +4 μC+4\,\mu\text{C} charge c) x=0.12 mx = 0.12\,\text{m} from the +4 μC+4\,\mu\text{C} charge d) x=0.18 mx = 0.18\,\text{m} from the +4 μC+4\,\mu\text{C} charge

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