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PHYSICS 30 “FORCES AND FIELDS” OBJECTIVES Name ______________ OBJECTIVE Explain electrical interactions in terms of attraction, repulsion and conservation of charge Describe three methods of charging an object. Describe the distribution of charge on the surfaces of insulators, conductors and differently shaped objects Describe Coulomb’s torsion balance experiment. Compare Coulomb’s Law with Newton’s Law of Universal Gravitation. Apply Coulomb’s Law to various 2 and 3 charge problems or situations. Define vector fields and compare electric fields and forces. Compare, qualitatively, gravitational and electric potential energy. Define electric potential difference or Voltage and use the formula V = E/q to solve various problems Use the formulae: E = F/q, E = kq/r2 and E = V/d to solve various electric field problems. Define electric current and use the formula I = q/t to solve various problems. Describe, quantitatively, the motion of an electric charge in an electric field. Explain, quantitatively, electrical interactions using the law of conservation of energy. Explain Millikan’s oil drop experiment and its importance in determining the elementary charge. Describe magnetism in terms of forces, fields and domains. In terms of their sources and directions, compare gravitational, electric and magnetic fields Describe Oersted’s and Faraday’s contributions to electromagnetism. What? Getting There Got It! What? Getting There Got It! Use the three left hand rules for magnetic fields around conductors, electromagnets and forces on charges and wires respectively. Use the formulae: Fm = qvB and Fm = IlB to solve various problems. Describe the motor effect. Describe the generator effect and electromagnetic induction.