PH 122 Lecture Notes - Dielectric, Housefly, Net Force
Document Summary
In the force model, a particle a exerts a force directly on particle b. In the field model, a alters the space around it. Particle b then responds to the altered space. The altered space is the agent that exerts the force on b. Needed to cause a spark in the air. The field vectors point away from a positive charge. Electric field of charge q at a distance r. , [away from q if q > 0, toward q if q < 0]) The field lines are closest together near the charge, where the field strength is greatest. Magnetic field is uniform in a parallel plate capacitor. The electric field of the heart is a dipole. Two parallel plates have charges of equal magnitude but opposite sign. Increasing the magnitude of the charge on both plates. Decreasing the area of the plates (while keeping the magnitude of the charges the same)
