lecture9 - Physics 2102 Physics 2102 Lecture 9 Lecture 9...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Physics 2102 Physics 2102 Lecture 9 Lecture 9 FIRST MIDTERM REVIEW FIRST MIDTERM REVIEW Physics 2102 Jonathan Dowling A few concepts: A few concepts: electric force, field and potential electric force, field and potential Electric force : What is the force on a charge produced by other charges? What is the force on a charge when immersed in an electric field? Electric field : What is the electric field produced by a system of charges? (Several point charges, or a continuous distribution) Electric potential : What is the potential produced by a system of charges? (Several point charges, or a continuous distribution) Plus a few other items Plus a few other items Electric field lines, equipotential surfaces : lines go from +ve to ve charges; lines are perpendicular to equipotentials; lines (and equipotentials) never cross each other Gauss law : =q/ . Given the field, what is the charge enclosed? Given the charges, what is the flux? Use it to deduce formulas for electric field. Electric dipoles : field and potential produced BY a dipole, torque ON a dipole by an electric field, potential energy of a dipole Electric potential, work and potential energy : work to bring a charge somewhere is W = qV (signs!). Potential energy of a system = negative work done to build it. Conductors : field and potential inside conductors, and on the surface. Shell theorem : systems with spherical symmetry can be thought of as a single point charge (but how much charge?) Symmetry, and infinite systems . Conductors and insulators Conductors and insulators Will two charged objects attract or repel? Can a charged object attract or repel an uncharged object? What is the electric field inside a conductor? What is the direction of the electric field on the surface of a conductor? What happens to a conductor when it is immersed in an electric field? Electric forces and fields: point charges Electric forces and fields: point charges Figure 22N-14 shows an arrangement of four charged particles, with angle = 34 and distance d = 2.20 cm. The two negatively charged particles on the cm....
View Full Document

Page1 / 26

lecture9 - Physics 2102 Physics 2102 Lecture 9 Lecture 9...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online