Basic Physics II Evidences - DrJJ - UiTM

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18.2 Charged Objects and the Electric ForceCutnell & Johnson 7ELAW OF CONSERVATION OF ELECTRIC CHARGEDuring any process, the net electric charge of an isolated systemremains constant (is conserved). Total number of negative charges(electrons) and positive charges (protons) must be equalConsider the fur and rod together as a system. Since the systemis uncharged initially, then the total charge must be zero beforeand after rubbing. Hence if rod acquires 6e due to rubbing(friction), then the fur must have lost 6e, the total charge for thefur-rod is zero.18.2 Charged Objects and the Electric ForceCutnell & Johnson 7ELAW OF CONSERVATION OF ELECTRIC CHARGEDuring any process, the net electric charge of an isolated systemremains constant (is conserved). Total number of negative charges(electrons) and positive charges (protons) must be equalCopyright Assoc. Prof. Dr. JaafarJantan a.k.a. Dr JJ, FSG, <strong>UiTM</strong> ShahAlam, Malaysia 15
18.2 Charged Objects and the Electric ForceCutnell & Johnson 7ELAW OF CONSERVATION OF ELECTRIC CHARGEDuring any process, the net electric charge of an isolated systemremains constant (is conserved). Total number of negative charges(electrons) and positive charges (protons) must be equalCharge ConservationA5qB-3qC3qShown are conducting sphereseach of charges 5q, -3q and 5qWhat is the total charge on thespheres?Sphere A touches sphere B andthen separated.What is the total charge after theprocess above, the charge on eachindividual sphere?A5qB-3qA2qB0qAqBqCopyright Assoc. Prof. Dr. JaafarJantan a.k.a. Dr JJ, FSG, <strong>UiTM</strong> ShahAlam, Malaysia 16
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Evidences for ClassroomInnovations,
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website&syllabus
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Dr JJ or Dr Jaafar Jantan Homepageh
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PHET simulationi. “Electric Field
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Assessment : Continuous Assessment
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iLearn - SuFO - Analysis Report ::
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