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Class Notes for Electrical and Computer Engineering at University of Waterloo

ECE106 Lecture 71: ECE 106,University of Waterloo,(p71)

Example 3 An infinite wire has been bend. Calculate B at point P. Has no symmetry. We cannot use Amperes Law. Let us see what happens for OB, |dl r|...

Electrical and Computer Engineering
ECE106
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ECE106 Lecture 72: ECE 106,University of Waterloo,(p72)

So for semiinfinite wire AO, 0 0 dl r dB = 4 r2 is nothing but equal to 1 0 dl r 2 4 r2 0I But for an infinite wire we have B = 2r from Amperes Law. B for semiinfinite wire is: 1 B = B infinite 1 0 0 = = 2 2r 4r for r = d ...

Electrical and Computer Engineering
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ECE106 Lecture 73: ECE 106,University of Waterloo,(p73)

From example 1, 0J 0 B = r 1 1 1 0 0 B = r 2 2 2 2 B = B +1B 2 0 0 0J 0 B = r11 r 22 2 2 But 1nd are2vectors on two different origins. = z r This is same on both origins O and O. 1 z r1 2 z r2 J J B = 0 0 r ( ) 0 0r (z ) 2...

Electrical and Computer Engineering
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ECE106 Lecture 74: ECE 106,University of Waterloo,(p74)

Because z = y. Therefore B is: 190

Electrical and Computer Engineering
ECE106
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ECE106 Lecture 67: ECE 106,University of Waterloo,(p67)

Example 1 Magnetic field of a cylindrical conductor. An infinite long cylindrical conductor is carrying current I and has radius a. Calculate B for r< a and r a. I J = a 2 Cylindrical symmetry. So the closed loop is as sho...

Electrical and Computer Engineering
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ECE106 Lecture 69: ECE 106,University of Waterloo,(p69)

Let us consider the line AA, dB due to element on left and right are shown. So at P, dB is in (y ) direction. 163

Electrical and Computer Engineering
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ECE106 Lecture 70: ECE 106,University of Waterloo,(p70)

So, consider this: By Amperes Law: I B dl = I0 enc Bl f r oAB + 0 f r oB C + Bl f r omC D+ 0 f r oD A = 0 0l 2Bl = J 0 0 0J0 B = 2 J B = 0 0 ( y) z > 0 2 B = 0 0 () z < 0 2 164

Electrical and Computer Engineering
ECE106
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Electrical and Computer Engineering
ECE106
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Electrical and Computer Engineering
ECE106
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ECE106 Lecture 63: ECE 106,University of Waterloo,(p63)

dU By definition, power is consumed (or flow) per unit time, i.e. P = dt= iV ab. If we use resister for power consumption P =iV = i(iR) = i R (7.2...

Electrical and Computer Engineering
ECE106
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ECE106 Lecture Notes - Lecture 62: Resistor, Electric Field, Temperature Coefficient

l I V Figure 7.4: Current through a resistor. If A is small, we can make uni...

Electrical and Computer Engineering
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ECE106 Lecture 68: ECE 106,University of Waterloo,(p68)

For r a B 2r = I 0enc = 0 0I B = ...

Electrical and Computer Engineering
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ECE106 Lecture 61: ECE 106,University of Waterloo,(p61)

In a perfect conductor (metal) there is only one type of carrier free electronsine charge). Total charge in the sample of length l, Q = (nAl)e (7.7) If this amount of charge goes through the cross section in t sec, then by...

Electrical and Computer Engineering
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ECE106 Lecture 64: ECE 106,University of Waterloo,(p64)

idl dl R l P Bisecting line Figure 8.2: Example 1. Note: This direction will be the same for every current element located along the wire. So the vector summation of magnetic field contribution at P from all the current el...

Electrical and Computer Engineering
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ECE106 Lecture 58: ECE 106,University of Waterloo,(p58)

For R < R i I D ds = Q Q D = ...

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Permachart - Marketing Reference Guide: Magnetic Circuit, Electrical Network, Angular Velocity

l e a r n • r e f e r e n c e • r e v i e w permacharts TM Electrical Engineering GLOSSARY OF TERMS ...

Electrical Engineering
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Electricity & Magnetism - Reference Guides

This Guide is another one of the many products that effectively advances one’s knowledge of a distinct aspect of the physical sciences. The basic of the properties of electricity and electrical circuits are established in ...

Electrical Engineering
4400:307
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Permachart - Marketing Reference Guide: Semiconductor Device, Precision Rectifier, Envelope Detector

permacharts TM E le c t r o n ic sI Waveforms Diodes ...

Electrical Engineering
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Permachart - Marketing Reference Guide: Schmitt Trigger, Square Wave, Negative Feedback

permacharts TM E le c t r o n ic sII Operational Amplifiers (OP AMPS) ...

Electrical Engineering
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