Created by StemPy LabThree equal charges of nC sit at three corners of a square of side m. What is the size of the electric field at the fourth corner?
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← A small oil drop of radius 0.70 µm and density 850 kg/m³ hangs at rest in an upward electric field of 2.5 × 10⁴ N/C. How many excess electrons does it carry? Take g = 9.8 m/s² and e = 1.6 × 10⁻¹⁹ C.A thin wire is bent into a quarter circle of radius 0.14 m. It carries +6.8 nC, spread evenly along it. What is the electric field at the centre of the circle? →
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