PHYS 0175 1st Edition Lecture 21Outline of Last Lecture II. Junction and loop rulesII. Sign conventionsIII. thermal energy dissipationIV. RC circuitCurrent LectureIII. Interaction between magnetsV. Direction of magnetic field linesVI. Cross ProductVII. Magnetic Force on moving chargeVIII.Effect of sign of charge on magnetic forceIX. Relation between E and BCurrent LectureX. Interaction between magnetsa. Permanent magnetsb. North and south polec. Cannot exist in isolationd. Like poles repele. Unlike poles attractXI. Direction of magnetic field linesa. Inside magneti. Field lines point toward N away from Sb. Outside magneti. Point from N to SXII. Cross Producta. C=AxB(both vectors and resultant is a vector perpindicular to both A and B vectors)b. Right hand rulec. Sweep from A to Bd. Magnitude=area ||ogram =absin*angle b/wXIII. Magnetic Force on moving chargea. F=q*vxBb. B=magnetic field(Tesla)c. |F|=qvBsin*angleXIV.Effect of sign of charge on magnetic forcea. Flips the direction if negativeb. Unchanged if positive chargeXV. Relation between E and Ba. Perpendicular to eachotherb. B has a centripetal force(no change in magnitude of velocity, only change in
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