Lecture 26    iq23

1. Ohm’s Law dissipated in (OL)

o OL-1:  J=sigma E, E=rho J

o OL-2: V=IR

o Series: R=R1+R2+…

o Parallel: 1/R=1/R1+1/R2+ …

2. Comments on selected homework in Ch20-h1.

o 002 A circuit with3 identical bulbs

o 008 A wire across a bulb

o 012 Power dissipated in series case vs in parallel case.