Lab H_ Electrical Equivalent of Heat.docx - Lab H Electrical Equivalent of Heat Group ID N\/A Name Date of Experiment Date of Report Submission Course

Lab H_ Electrical Equivalent of Heat.docx - Lab H...

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Lab H: Electrical Equivalent of Heat Name: Group ID: N/A Date of Experiment: 4/3/19 Date of Report Submission: 4/10/19 Course and Section Number: PHYS 103A: 004 Instructor’s Name: Nengyi Huang Partners’ Names: Hrushi, Dipen, Leandro, Tomasz, Diego, Matt 1. Introduction 1.1) Objective 1) To determine electrical equivalent of heat (J) the conversion factor between the electrical energy unit, joule, and heat energy unit, calorie; 2) To come to a deeper understanding of Conservation of Energy. 1.2) Theoretical Background According to the law of conservation energy, the total amount of energy in an isolated system remains constant over time. Energy cannot be created or destroyed but can be transformed from one form to another. 2. Experimental Procedure
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3. Results 3.1) Experimental Data E = Pt E = IVt P = IV Q = Σ mC ΔT ¿ m W C W ( T f T 0 )+ m c C c ( T f T 0 ) Q = E Table I Time (minute) Voltage [V] Current [A] 2 7.2 1.5 4 7.2 1.5 6 7.1 1.475 8 7 1.450 10 7 1.45
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12 6.8 1.41 14 7 1.45 16 7 1.45 18 6.9 1.44 20 6.8 1.4 3.2) Calculations Mass of the empty inner cup of the calorimeter m c ¿ ❑❑ 50.65 g
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