الفيزياء العامة الجزء الثاني#موقع الفيزياء.كوم

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Current & ResistanceCurrent and Resistanceالتيار والمقاومةدرسنا في الفصول السابقة بعض الظواهر الكهربية المتعلقة بالشحنة الساكنة،‏ وفي هذاالفصل سنركز دراستنا على الشحنات الكهربية في حالة حركة أي ‏"تيار كهربي".‏ حيثنتعامل في حياتنا العملية مع العديد من الأجهزة الكهربية التي تعمل من خلال مرورشحنات كهربية فيها مثل البطارية والضوء وغيرها من الأمثلة الأخرى.‏ ويجب أن نميزبين نوعين من التيار الكهربي وهما التيار الثابت والتيار المتردد،‏ وفي هذا المقررسنركز على التيار الثابت.‏www.hazemsakeek.com
Lectures in General Physics7.1 Current and current densityدرسنا في الفصل السابق تأثير فرق الجهد الصادر من بطارية على المكثف الكهربي حيث تتراكمالشحنات الموجبة على اللوح المتصل بالقطب الموجب والشحنات السالبة على اللوح المتصلبالقطب السالب للبطارية،‏ وهذا أدى إلى تكون مجال كهربي في الفراغ بين لوحي المكثف.‏C =qVوعرفنا السعة C من خلال المعادلةسنقوم هنا بتطبيق فرق جهد كهربي صادر من بطارية كهربية على طرفي موصل كهربي مثلسلك من النحاس مساحة مقطعة A.والمقاومة.‏وسنتعرف على ظواهر فيزيائية جديدة مثل التيار الكهربيConductorElectric fieldAVv TtBatteryFigure 7.1As shown in figure 7.1 above the electric field produces electric force(F=qE), this force leads the free charge in the conductor to move in onedirection with an average velocity called drift velocity.The current is defined by the net charge flowing across the area A per unittime. Thus if a net charge ∆Q flow across a certain area in time interval ∆t,the average current I av across this area is∆QI av= (7.1)∆tIn general the current I isDr. Hazem Falah Sakeek
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LECTURES INGENERAL PHYSICSPart TwoE
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محاضرات في الفيزيا
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ContentsChapter (1) Electrostatic1.
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4.5 Energy stored in a charged capa
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Introduction to ElectrostaticsPart
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Introduction to ElectrostaticsIntro
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Introduction to ElectrostaticsWe ha
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Introduction to Electrostaticssame
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Introduction to Electrostatics1.2 P
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Introduction to ElectrostaticsRubbe
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Coulomb’s Lawقانون آولو
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Coulomb’s LawCoulomb’s lawقا
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Coulomb’s Law2.2 Calculation of t
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Coulomb’s Lawq 1 &q 3نتيجة
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Coulomb’s Lawx∑∑FFxy= 2 × 0.
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Coulomb’s LawExample 2.4A charge
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Coulomb’s LawExample 2.5Two fixed
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Coulomb’s Law2.3 Problems2.1) Two
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Lectures in General Physicsالكه
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Lectures in General PhysicsElectric
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3.3 The direction of E rLectures in
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Lectures in General PhysicsExample
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Lectures in General PhysicsE y = E
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Notice that the rule of drawing the
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Lectures in General Physics3.8 Solu
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Lectures in General PhysicsE y = -E
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Lectures in General Physics3.10 Pro
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Lectures in General Physics3.16) Ch
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Electric FluxElectric Flux4.1 The E
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Electric Flux4.1 The Electric Flux
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Electric Fluxوالمقصود ب ne
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Electric FluxExample 4.2In figure 4
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Electric Flux1 q∴ E =(4.6)24πε
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Electric Flux4.7 Applications of Ga
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Electric FluxA linear charge distri
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Electric FluxAn insulated conductor
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Electric FluxFor r<aAaRrFigure 4.17
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Electric Flux4.8 Solution of some s
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المجالElectric Fluxلاحظ
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Electric FluxExample 4.7Consder a l
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Electric Flux4.9 Problems4.1) An el
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Electric FluxGauss’s law to find
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Lectures in General PhysicsElectric
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Lectures in General Physicsمثال
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Lectures in General Physics5.1 Defi
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Lectures in General Physics5.3 Elec
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Lectures in General Physics5.4 Pote
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Lectures in General Physics5.6 The
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Lectures in General PhysicsSolution
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Lectures in General Physics5.9 Solu
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Direct Current CircuitsIn figure (c
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Direct Current Circuits8.6 RC Circu
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Direct Current CircuitsNote that th
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Direct Current CircuitsExample 8.11
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Direct Current CircuitsExample 8.14
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Direct Current Circuits8.7 Electric
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Direct Current Circuits8.7.3 The po
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Direct Current Circuits8.11) (a) Fi
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Direct Current Circuits8.22) Consid
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Multiple choice question for part 2
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Lectures in General PhysicsAPPENDIC
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Lectures in General PhysicsUndersta
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Lectures in General PhysicsThe posi
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Lectures in General Physicsيمر
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Lectures in General Physicsinexpens
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Lectures in General PhysicsBatteryB
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Lectures in General PhysicsThere ar
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Lectures in General PhysicsAPPENDIX
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Lectures in General PhysicsChapter
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Lectures in General PhysicsSI Deriv
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LengthMetric and Imperial Measures1
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Lectures in General PhysicsPeriodic
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Lectures in General PhysicsOpticsOp
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Lectures in General PhysicsAmerican
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APPENDIX (E)BibliographyLectures in
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APPENDIX (F)IndexLectures in Genera
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الفيزياء العامة الجزء الثاني#موقع الفيزياء.كوم

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