Week 5 Day 2 Exam 1 Topics Field Visualizations Electric Field Discrete and Continuous Charge Distributions Symmetric Distributions Gauss s Law with Superposition Electric Dipole Toque and Force Electric Potential Difference Discrete and Continuous Charge Distributions Energy and Force Applications Electric Field from Electric Potential Conductors and Equipotential Surfaces Capacitors Capacitance and Stored Energy A positively charged wire is bent into a semicircle of radius R as shown in the gure above The total charge on the semicircle is Q The charge per unit length along the semicircle is non uniform and given by 0 cos What is the relationship between 0 R and Q If a particle with a charge q is placed at the origin what is the total force on the particle
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