60 likes | 548 Views
Physics 121: Electricity & Magnetism – Lecture 1. Carsten Denker NJIT Physics Department Center for Solar–Terrestrial Research. Electric Charge. Electromagnetism Electric Charge Conductors and Insulators Coulomb’s Law Charge is Quantized Charge is Conserved. Coulomb’s Law.
E N D
Physics 121: Electricity & Magnetism – Lecture 1 Carsten Denker NJIT Physics Department Center for Solar–Terrestrial Research
Electric Charge • Electromagnetism • Electric Charge • Conductors and Insulators • Coulomb’s Law • Charge is Quantized • Charge is Conserved Center for Solar-Terrestrial Research
Coulomb’s Law Coulomb’s law Gravitational force Coulomb’s law Charge transfer Superposition principle Center for Solar-Terrestrial Research
Theorems and Definitions Charges with the same electrical sign repel each other, and charges with opposite electrical sign attract each other. One Coulomb is the amount of charge that is transferred through the cross section of a wire in 1 second when there is a current of 1 Ampere in the wire. A shell of uniform charge attracts or repels a charged particle that is outside the shell as if all the shell’s charge were concentrated at its center. If a charged particle is located inside a shell of uniform charge, there is no net electrostatic force on the particle from the shell. Center for Solar-Terrestrial Research
Charge is Quantized and Conserved Radioactive decay Annihilation Pair production Center for Solar-Terrestrial Research