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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.

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physics 121 electricity magnetism lecture 1

Physics 121: Electricity & Magnetism – Lecture 1

Carsten Denker

NJIT Physics Department

Center for Solar–Terrestrial Research

electric charge
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

Coulomb’s law

Gravitational force

Coulomb’s law

Charge transfer

Superposition principle

Center for Solar-Terrestrial Research

theorems and definitions
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
Charge is Quantized and Conserved

Radioactive decay

Annihilation

Pair production

Center for Solar-Terrestrial Research