Physics 227: Lecture 6
Dipoles, Calculating Potential Energy
or Potential, Equipotential Lines
Lecture 5 review:
The electric eld vanishes inside a spherical shell of charge.
Conductors and surface charge.
Conservative forces, elds, potential energy, work
Physics 227: Lecture 5
Gausss Law Leftovers, Work /
Potential Energy in Electrostatics
Lecture 4 review:
Gausss Law: for a closed surface, = E.dA = EdA = E
cos dA = qenclosed/0.
The ux does not depend on the size or shape of the
Gaussian surface, or the
Physics 227: Lecture 4
Applications of Gausss Law,
Conductors in Electrostatics
Lecture 3 review:
Calculate the electric eld through superposition as a sum of
charges or integral over a charge distribution.
Symmetry arguments can give you the direction of
Physics 227: Lecture 3
Electric Field Calculations, Symmetry,
Charged Particle Motion, Flux, Gausss Law
Lecture 2 review:
If you know anyone who has not managed to register,
some more spaces have opened up. Please have them
r2 contact Stacey Jacbs ASAP.
Physics 227: Lecture 2
Coulombs Law, Superposition,
Electric Fields, Field Lines
Lecture 1 review:
All your questions are answered on class web pages: Sakai:
01:750:227 or http:/
/www.physics.rutgers.edu/ugrad/227
Separate charges by rubbing (appropriate
Physics 227: Lecture 11
Circuits, KVL, KCL, Meters
Lecture 10 review:
EMF is not a voltage V, but OK for now.
Physical emf source has Vab = - Irinternal.
Power in a circuit element is P = IV.
For a resistor with V = IR, P = IV = I2R = V2/R.
Light bulbs ar
Physics 227: Lecture 9
Current, Resistance, Resistivity
Lecture 8 review:
Energy Stored = U = Q2/2C = CV2/2
For constant charge, adding a dielectric of constant K
increases capacitance a factor K, decreases voltage a factor
of K, and decreases energy stor
Physics 227: Lecture 8
Dielectrics, and Capacitors
Lecture 7 review:
Capacitors come in many sizes and shapes
Q=CV - charge Q on the two plates, voltage V across them
Energy Stored = U = Q2/2C = CV2/2
u = U/Volume = 0E2
In a circuit, capacitors in paralle
Physics 227: Lecture 16
Amperes Law
Lecture 15 review:
Magnetic eld magnitudes for charged
particle or current.
Ratio of magnetic to electric force for two
charged particles.
Long straight wire: B = 0I/2r
FM
2
= 0 0 v
FE
Parallel wires: F/L = 0I2/2r.
0 q
Physics 227: Analytical Physics II
Electricity and Magnetism
Welcome back to fall 2011 Rutgers football! And Physics 227.
Class web pages: http:/
/www.physics.rutgers.edu/ugrad/227 or
Sakai: 01:750:227
Lecturer: Prof. Ron Gilman (lectures, iclickers, webs