What is engineering? Purposeful use of science What is 6.002 about? k u . o Gainful employment of c . e l a s e t Maxwell’s equations No 4 m 2 o r f f o w 4 e i e v g e a r P PFrom electrons to digital gates and op-amps Cite as: Anant Agarwal and Jeffrey Lang, course materials for 6.002 Circuits and Electronics, Spring 2007. MIT OpenCourseWare (http://ocw.mit.edu/), Massachusetts Institute of Technology. Downloaded on [DD Month YYYY]. 6.002 Fall 2000 Lecture 1 Lumped Circuit Abstraction Consider V The Big Jump from physics to EECS I k u . o le.c a s e t o N 4 m 2 o r f f o w 6 e i e v g e a r P P ? Suppose we wish to answer this question: What is the current through the bulb? Cite as: Anant Agarwal and Jeffrey Lang, course materials for 6.002 Circuits and Electronics, Spring 2007. MIT OpenCourseWare (http://ocw.mit.edu/), Massachusetts Institute of Technology. Downloaded on [DD Month YYYY]. 6.002 Fall 2000 Lecture 1 V Must also be defined. see A&L So let’s assume this too k So ∂φ B.co.u VAB defined when ale = 0 s ∂t e t o N m f 24 elements roE ⋅ dl 7 o VABw = ∫fAB outside 1 e i e v g e Pr Pa Cite as: Anant Agarwal and Jeffrey Lang, course materials for 6.002 Circuits and Electronics, Spring 2007. MIT OpenCourseWare (http://ocw.mit.edu/), Massachusetts Institute of Technology. Downloaded on [DD Month YYYY]. 6.002 Fall 2000 Lecture 1 What can we say about currents? I ca S a I da I ba k u . o le.c ∂q a LMD ∫S J ⋅ dS = − ∂ot tesunder N 04 om 3 of 2 r f w + I =e 02 e i I + I v Preca da Pabag Kirchhoff’s Current Law (KCL): The sum of the currents into a node is 0. simply conservation of charge Cite as: Anant Agarwal and Jeffrey Lang, course materials for 6.002 Circuits and Electronics, Spring 2007. MIT OpenCourseWare (http://ocw.mit.edu/), Massachusetts Institute of Technology. Downloaded on [DD Month YYYY]. 6.002 Fall 2000 Lecture 1